I just bought a Hardrock Pro Disc so I think my opinion may be of some value here. Before I made my final decision to buy I test rode a number of bikes in the Sub $600 price range including the GF Tass and Marlin, Specialized Rockhopper, Trek's you name it I rode it. I felt the most comfortable on the Hardrock and to me since I am the one plunking the $$$ down and the one riding it I could give a rip what other's opinions where on the Hardrock. I like it and that my friend is the most important thing.....