Hello all, I've been lurking for a bit and finally joined up. LOTS of really good info on here and it seems like good forum where people are actually passing on help and info instead berating so thanks to everyone for that! Now for the question.. I've been playing with some basic machining for a few years now on a little HF 7x10 lathe and now that I have bought a house with a shop I am in the market for a proper hobby mil to expand to. I'm still back and forth between the PM-25 and PM-30 but leaning towards the -30. I see the installed DRO adds about $700 installed to the price and that got be wondering... Basically, why is it more costly than a DIY DRO kit? Is it higher quality, more accurate, etc. or is it for the convince of already being installed?