The Iron Horse has a much better shock than either of the Bikesdirect...Tora vs. Dart, the IH has Shimano Hydros vs. the tektro hydros or theAvid BB5 mechinicals...I'm a fan of Avid if mechinical, but not Tektro brakes, especially their hydros. At least with RS Cycle you will be able to talk to a person who actually rides their products via 800 number and RS would seem to be much better than BD for any problems..don't think BD even has a 800 number. Fwi...there are threads here about BD bikes with paint flaking off...not sure if these were road bikes, mt bkes, or both.