Between milling, re-sawing, and roughing out staves....I use bandsaws a lot....Them fellas give ya good advice about 1 HP being plenty of saw, just give your blade selection some serious thought. My personal favorite is the 3 or 4 HOOK style. has plenty of tooth set, and gullets big enough to retard loading up (makes clean cuts) and it works well for "free-handing" cuts on twisty staves.
The only wood that I have worked, which can be problematic is white ash.....when it's green it will load a blade really fast (with pitch/resin) and will do it in a hurry. That wood needs a wet drip hooked up to lube the blade.
On dry wood that saw/blade will cut any sort of wood like ironwood, osage, Ipe, hard maple etc.
rich