The really old machines are works of art. But for a while, American made stuff went downhill. The last bandsaw I bought was back in mid-seventies when I was making/repairing guitars - a Rockwell 14". It was *crap* compared to saws I've seen recently. It took a lot of work to balance the wheels, round the rubber 'tires', and generally get it useable. That said, it was beefy and basic, so once I got it 'right', with the height extension, I was able to resaw nearly foot deep (tall) stock into 1/8" thick material for guitar backs.
Two things I learned over the years - buy high quality blades purpose made for ripping (assuming you ARE ripping and not doing scrollwork) and if it's an older saw, look into updated blade guides. I use something IIRC called 'cool blocks' which are graphite impregnated composite material.
Older machines had two distinct things going for them: 1) Mass - a heavy machine is more stable, runs smoother, etc. 2) a heavy motor - I can't back this up with data/specs, but I've owned old machines with motors rated 1hp, that were 2x heavier than 'modern' motors. One old Delta table saw I had, ran like the proverbial swiss watch and had *unbelievable* power - once the motor spooled up it was like a freight train. Nameplate said 1hp but jimminy... I could barely lift the thing. I suspect more copper windings etc.?