If you are looking at an 04 check out the frame really good we had issues on the 04's with a bad batch of frames. Other than that i hammer mine on a regular bases nothing has happened that i have not caused lol
I've got an 06 V2 and love it. It has run to the top of Mt Washington (6,200') hammers through the deep mud here in NC with no issues. The power just stock will leave you grinning, add some different springs and a chip and hold on. I wouldn't trade mine for any other machine out there.