How do these work? Do they conflict with each other? What problems might they cause? The CM version seems to work better, but causes other apps to shut down.
I keep them both enabled, but I have tried them each individually and the CM option works much better. The fact that it "causes other apps to shut down" is the whole point. Android keeps the memory filled at all times and ends tasks on demand when more memory is needed. It is supposed to be pretty smart and know, based on your usage, which apps to give priority to but if you are multi-tasking and the phone needs more memory it may kill LauncherPro causing it to to reload from scratch when you hit the home button. The option to keep it in memory gives it a higher priority so when Android tries to free up some memory it kills something else.
The CM option is going to have more sway with the OS than the LauncherPro option (since it is the CM option is from the OS itself vs an app telling the OS to not kill itself).
I've also had even better success with screen redraws using this method. I think it's what the CM toggle is supposed to do, but this actually does it.
1) MAKE A NANDROID BACKUP
In your terminal application on your phone (if you have to ask what this is, Google it, download it from the market)
su (enter) echo ro.HOME_APP_ADJ=1 >> /data/local.prop (enter) reboot (enter)
If you want to undo what this command does, simply remove that toggle from: /data/local.prop, or if you did not have this file (like I did not) prior to the mod...remove it entirely