Background: I have a 2005 Gary Fisher Nirvana S. It has a Shimano Nexave crank-arm (FC-T303) with 28/38/48 rings. The bottom bracket is a Shimano UN54 68 x 118mm. I replaced the BB last year (old one was creaking) and the new one has about 200 miles on it.

Issue: Last winter I hit some black ice, back wheel went out from under me, and I landed on the drive side of the bike. There is now a subtle, yet noticeable, wobble during my pedaling motion.

Questions:
1. I think I bent the drive side crank arm when I crashed. Is it also possible that I bent the bottom bracket?

2. Looking for suggestions on replacing the original crank. I notice that Amazon.com has a bunch of options ranging from $20-$40 which is right about what I'm willing to spend on this bike (it's my winter beater). Any specific recommendations would be really appreciated.