I'm looking to buy one of these, but thought I'd ask you guys for some helpful input. The tt pro has 520 chromoly and the iro pro has 631 steel tubing, but check them out for yourselves

http://www.irocycle.com/index.asp?Pa...ROD&ProdID=196

http://bikesdirect.com/products/mercier/kilott_pro.htm

i looking towards getting the partial build of the mark v pro. Anybody have any useful information/opinions? Pros and cons and what not. thanks!