I really want to like Lion but I'm having dozens of issues, mainly lots of system hangs, slowness, freezes, and more slowness. I've read others say a clean install (instead of overtop SL) have resolved a number of these issues but I've also seen users say that time machine backups done in Lion won't restore in SL. And like others I have a lot of files I need. So does this step process make sense for my needs: 1.) Boot from Snow Leopard disc and erase macbook pro hard drive. 2.) Reinstall a clean version of Snow Leopard onto hard drive and install all updates. 3.) Redownload Lion from App store, and reinstall, then restore files from TM. OR 1.) Make bootable copy of Lion installer, boot from that. 2.) do a direct fresh install of Lion and then do a backup restore.