I find that I ride my IRO the most by far, but that's probably because my other two bikes are at home 2500 miles away. Those two are a Cannondale MTB (1 year old) and a '98 Rockhopper that's now an SS. I did find that over the summer, my Rockhopper got more use than the Cannondale just because I couldn't find the time to drive out to trails and the Rockhopper was a more fun city rig. I bought my IRO in September and it is definitely my most enjoyable bike because of its ridiculous versatility and of course the pure joy that is riding fixed. I use it for a daily commute as well as road rides, and I can swap out tires for the snow but not sacrifice much of the bike's blazing speed. I almost want to take it out on some trails on my CX knobbies in the springtime...