Of the 4 types of saws that have been discussed in this thread (floor model horizontal bandsaw, power hacksaw, abrasive saw, and portable bandsaw I have 3. They are the floor model horizontal bandsaw, power hacksaw, and abrasive saw. The floor model horizontal bandsaw is used by far the most. I would say 90% of the stock that needs to be sawed is done on this saw. It cuts straight, is relatively quick, and doesn't need to be watched or attended to. It has multiple speeds and can cut anything you throw at it within it's cutting range.
The second most used saw is the power hacksaw. It is also relatively quick although slower than the bandsaw, cuts straight, and doesn't need to be attended. I bought this saw as a backup for times when the bandsaw is busy.
The least used saw by far is the abrasive saw. I only use it on the rare occasion that the other saws are busy, the material is in such bad shape I might ruin a blade on the other saws, or the material is small dimension aluminum which it cuts well with a blade similar to the one linked. For other materials it's messy, noisy, doesn't cut nearly as straight as the others, and requires a full time operator. It can't be setup and left to run on it's own like the bandsaw or power hacksaw. Should you consider blades similar to the ones in the link be aware a different blade is needed for ferrous and non ferrous materials. They each start in the $100.00 range and go up from there. Top of the line blades are in the $300.00 to $400.00 range.
I don't have a portable bandsaw because so far all the cutting has been done in the shop and I think the floor model bandsaw is far superior for the things I cut. Should I need to do some cutting in the field I wouldn't hesitate to purchase one. I' used them at work (Milwaukee brand) and was satisfied with their performance.
The only downside of the floor model bandsaw is the cost of blades. Bandsaw blades cost around $45.00, but last 2 to 3 years. Power hacksaw blades are generally around $10.00 to $15.00 depending on the brand and TPI. My only concern if I was buying one today would be the availability of blades. I currently have over 50 in stock so it's not a problem for me for the foreseeable future.