...I'm a long time 2 valve guy (about 5 of them over the years) now toying with getting another monster, but with 4 valves... I found a 2007 S4R locally and it seems reasonably priced (relative to the new 2v 1100) and with low mileage... I just can't find any long-term reviews of this bike? The testa motor was only used in the monster for, I think 3 years? Does anybody out there have a 2007 S4R with a ton of miles on it? How is the reliability of the bike/motor? Also, what is the current cost of an adjustment on a 4 valve duc? Are all 2007 models now 7500 miles?