Agreed the Dk Opsis is a great bike, while it is heavy, it's still very good to ride. I will say though I went from an almost 29lb. bike, to a st. martin eifel that I have down to about 22lbs. and It made a huge difference. Granted some of the change came into play with the different angles and what-not, but when doing even simple stuff like steamrollers, hang-5's, peg wheelies etc. just lifting the other end of the bike it's highly noticable, almost effortless. TJ is right though in a matter of a few days you will pick up on the difference and it probably won't affect you a whole lot, but at the same time, switching from trick to trick or holding on to a trick is made slightly easier because you feel more like you can just move the bike where you want it rather than needing that momentum to kind of throw the bike where you want it. Making corrections to your stance, balance point mid-link is slightly easier. But that's still no reason to stop riding the DK, that is a solid bike, and hell I rode a dave mirra 540 air for probly the first 2 years of my flat experience and that thing was a serious tank. Heavy to pick up, very long, basically all wrong for flat, but riding something that big and awkward also gave me a lot of insight as to what I actually wanted to buy the next time around. Going super small and light isn't always the answer, riding an old 99' gt show I actually felt cramped even though it was much lighter, I loved the bike but there wasn't as much room as I really wanted, So I mean honestly I would focus on more of the geometry, and the feel of the bike you're looking for than to focus on the weights. By all means don't build a tank, but unless you know you're looking for a featherweight kind of bike, It's really not neccessary. Room and length are far more important to me.