Yesterday, I finally had a chance to drop off my K2 for a new weapon of my choice. I used to work at this shop, & am getting a killer deal on either of the aformentioned bikes. What I'd like to know from those of you who have ridden both, or who 'OWN' both...are they like apples to oranges? What are there biggest differences (I've sat on both, but all I get is the ergonomic feel)? Which excels where? Any mechanical problems from either? I have read about the rumors of the frame issues with the K5, & know about the wheel recall on the 10R, but what else should I be concerned with? I have ridden my buddies 04 10R w/a full Akropovic exhaust w/a Power Commander, & that f*cker was wild! Thanks for any info.