I own the 2010 SJ FSR Expert 29er in XL. I'm just getting back into cycling after a huge layoff (10-15yrs). I can't compare nor do I have any real experience with the Rumplefish. I love my bike. It's made me a better rider and the full suspension allows me to recover from riding sooner since I don't get so beat up by the rocky trails by me. I'd be glad to answer any specific questions. However, I can't help with a comparison.Brassnbikes said:I initially posted this on the 29er forum with no response, so I'll try here too. I've seen these two bikes compared to other bikes but not head to head. Anyone had time on both of these models and care to comment?