Since you really like the April Rom Upgrade from Sprint/HTC, do yourself a favor and check out this thread. The OP, with the help of a couple of heavy weights, has taken the exact rom you mention, and stripped out all of the unnecessary Sprint clutter. Everything else is left untouched. It runs faster, smoother, is equally as stable, and has more memory available. Should be perfect for what you have been looking for.
http://forum.ppcgeeks.com/showthread.php?t=64695