I've just put a SanDisk Extreme 240GB in my new MacBook Pro running OSX Lion. Now I'd like to know whether I should use TrimEnabler to enable the TRIM function or not.
That SSD does have on-board garbage collection, it seems, so depending on how well that works you may not need to enable TRIM. With some drives, the performance can decrease significantly before garbage collection kicks in and in that case, you may want to enable TRIM.
It is an unofficial 'hack', so you may want to consider that as well, and you'll have to re-enable it every time there's a new update to the OS (and hope it still works). I do use it with my older Corsair P128 and haven't had any problems with it.