I switched to Apex a while ago because I got tired of Sense reloads. Keeping it in memory let it rarely have to reload. And when it did, I could still scroll through the home screens while the widgets/apps got populated, which never took more than 2 seconds. I also liked the stock feel to it, obviously. After the Sense 4.1 update, I tried Sense again and have been pretty happy with it. Reloads rarely occur, and while I still can't scroll through the screens for sometimes up to 5 seconds, the cohesive design between the HTC widgets, dock, HTC apps and the pull down menu make up for the occasional inconvenience. The lack of scrolling and app drawer lag is appreciated as well.