The OP, Wreck and others raise many good points. I too wanted a good, small lathe and spent several years looking. A big part of that was educating myself in what a "good" little lathe would look like, and what trade offs would be necessary. I am sure the OP understands that you can't get everything in one package. He originally talked about going up to 11x24 and up to 1000# to 53" long. He also wants it to be new, and under $5000.
There are a bunch of things there that simply do not line up.
Things have really changed over the past several decades. There always has been and still is a whole category of machines that are built entirely to price, Keith doesn't want one of those (which I totally get). There is still a small market for machines which are build to a very good quality - obviously, with a small market the price will be disproportionately high.
Back in the day, you could get a decent little lathe for the price of a mid-priced car. For a top end machine, it would be twice that amount. I suggest, that price relationship is still about the same. I think you can get an HVLH knock off in the $20K range (it will be nice). Keith's price point is out of whack.
Generally, the better machines are going to be bigger and heavier than the low end machines. I was successful in tracking down a "good" lathe. The work envelop is 11x24 - right on what he had in mind. The only problem with the limitation he identified is that it is #2700 and 68" long. Perhaps there is a good solid little machine (as in a 9" or 10" ??), but Keith has put forward some very demanding constraints.
My suggestion is that anyone looking for a higher end little machine needs to forget about what make / manufacturer it is (unless they have lots of $$, then they probably won't be interested in this thread - they can just go buy what they want). In the $5000 price range, that is going to be a used machine, probably with some issues. If you double that, and are patient, you should be able to get a nice used machine.
I know machines reasonably well (bought my first machine 33 years ago - and have used it plenty). For the smaller lathe I spent a couple years looking and learning. You are doing the right thing by asking a question here on HM. Learn what is possible and what matters in your situation.
When a Smart and Brown 1024 showed up at the local government surplus auction I went for it. I had never heard of Smart and Brown - that didn't matter because it was fitted the way I wanted.
http://www.lathes.co.uk/smartbrown/page5.html
The size, weight and power were not issues, because I had already sorted that out (in other words, get ready). The machine could not be test run and there was obvious damage. That was actually a good thing, because it brought the price down. I paid $1700 and spent about a year fussing around and fixing it up.
http://www.hobby-machinist.com/threads/smart-and-brown-1024-lathe-another-trip-to-the-auction.30870/
The quest for a "good" little lathe is well worth it. The S&B is a joy to run. Sure it is 50 years old, but a nicer set up than my gear head machine that is 20 years newer. The S&B has the controls that are arranged better, it has 6 speeds of change on the fly (very nice when threading into a shoulder or when ramping out at the end of a thread), in the high speed range the final drive is a wide belt (which is supposed to be a good feature for those who get fussed over gear patterning coming through to the finished item), a wide speed range (30-2500), collets direct into the head stock, D1-4 spindle mount (same as my other machine), fairly quite (compared to the other machines in the shop).
Of course there are other "good" little machines - some of which have been mentioned by other respondents, there are many other makers of good little lathes. Get your details sorted out (transport, cash) and learn what you want in a machine. Learn what the manufacturer's provide in a machine. Forget about what brand - you will come across nice little lathes, but you will only have one choice take it/leave it and wait for the next one. I suggest that you don't be too concerned with not being able to test the machine. If it has been dropped or looks really, really bad - then don't go for it. Good quality machines have always been expensive, and were generally well taken care of (at least for the first couple decades of their life). Also, a top little machine was probably not in production service (i.e. in a tool room). Also they were generally very well made (which is what made them top end and expensive) - they don't get trashed easily.
Another consideration is that nice little lathes are hard to find (the point of this whole thread). To an extent this is an investment. I already have a line up of folks wanting to buy the S&B. Selling it is not going to make me rich, but I sure won't lose money on it. If you buy a quality little machine in good used condition at market value price (whatever that is, it does not really matter), and look after it, you will be able to sell it at market value price. Remember, that anybody looking for a quality little machine has the same problem - there isn't much to choose from.