the problem with those 3 wheel saws- is that the wheels are smaller than say a 14" saw, so the radius the blade needs to bend around is smaller- and that plays heck on blades- blades will fracture and crack quicker than a bigger wheeled saw- especially at the blade welds.
also the smaller diam. limits as too how thick a blade you can run- now not wider but actual thickness measured in thou. eg a 14 " saw wont like an .035 blade much- they will prefer an .025 blade- the thicker blades will fracture. you need a 16 to run 035 blades
the thicker blade helps with stability in the cut- really important if you are going to do a little resawing for some projects etc.
i would buy a minimum of a 14" or bigger.
check out the busy bee saws- not the best- its chinese stuff- but for the average home workshop they are pretty good value. but before i bought a new craftex from busy bee- i would buy a good solid used machine.
oh and like everyone says get one with enough jam- niothing worse than the machine lugging down.
i am kinda addicted to bandsaws- i use mine for everything- dont have a table saw.
i have a delta 14" a craftex 14, a craftex 16. a bigger 22 incher and have a brute coming that runs a 5" wide blade on it- with a 15hp motor, i think it has 3' wheels- fugger that will cut lams for my bows ok! thats iffin i ever get the chance to get near my bow shop again- and ever even think about building another bow :(
you can never own enough bandsaws- nice to have them all set up with different blades- for different uses.
good luck- keep a-lookin you will find something!