I'm thinking about buying some used equipment from B&H. Is this a good idea? Are there better ideas?
I've bought used gear from BH, Adorama, and Lensrentals
as well as Craig's List. If you're careful you can get some great deals. KEH can also have some good buys too. Just look around and compare.
If you ever need another place to rent from, check out Lensrentals
. I've used them bunches of times before Aperturerent came around. They have a great selection and their service is top notch. I really like that place and those folks. 
Edit: Just checked & Lensrentals has a 17-55 for sale for $711![]()
Can't wait to use it! Thanks for the info guys.
But only because we were the only team that showed up at all 6 tracks throughout the year. We aren't professional nor fast (compared to the real mtn bikers) but its usually some great people out there and all ages, skills, and weights ride together! You are always welcome to just go to the competitions and watch, just be sure to stay out of the serious bikers way 



