I love this home screen replacement, and most of the time, it is very smooth. The best one I have tried so far and it has a nice polished look to it. I have alternated between this and Helix Launcher. However, I have noticed a considerable amount of lag at times when exiting apps or when the home screen needs to be refreshed. Too much lag for me to tolerate, so I do not use it. I am sticking with the stock home screen for now. Hopefully, Froyo will resolve the lag issues (or maybe a new phone). Using Moto Droid.