hey everyone, I am new to this whole downhill thing. I rented a bike a few times this summer at a few different places. I really want my own bike to be able to bring with me. I have been saving up and searching around for a good used bike. What are your opinions on Chumba Wumba f4's? are they good bikes. I am really light, will I be able to use this bike? will it be the right size for me, I am 5'6". There is one on ebay right now that sounds really nice. My parents said I could buy it if I have enough money and they will pay for it and I can pay them back. Are they good bikes? Should I consider anything else? I have ridden a kona stinky, specialized big hit, and a rocky mountain before as rentals. Would this be good for me. Someday I would like to try a race. here is the link if you want to check it out and try to gimme some pointers or advice on teh bike http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=7188009963&sspagename=STRK:MESE:IT I might be able to get it really cheap because the auction is only at 399 right now. Please help, I can't stop thinking about it and my parents keep telling me to stop pestering them about it.