Unshielded 10-2 should be fine for your estimated lengths and for circuits up to 20amps. The dedicated circuits should help to eliminate some of the hum/buzz you're experiencing, but it all depends on where it is coming from.
Romex is a brand name, but like Kleenex, has become the de facto name for standard interior electrical cable. Romex in shorter lengths often is packaged in boxes, so check that out. I doubt that there's much difference between brands, but be sure it's all copper (not aluminum!) and that the jacket is sturdy.
Hope that helps!
Tom
Romex is a brand name, but like Kleenex, has become the de facto name for standard interior electrical cable. Romex in shorter lengths often is packaged in boxes, so check that out. I doubt that there's much difference between brands, but be sure it's all copper (not aluminum!) and that the jacket is sturdy.
Hope that helps!
Tom