Also, tonight I just tried the whole "tab to transient"-esque deal in Logic, and this is how I do it: select everything with the Marquee tool, slide the selection over with Shift+right arrow, slice at locator (which I have mapped to Command+/). There are two problems:
1) Sliding the selection to the next transient is SO slow that it is completely unusable. Even with a blank project, nothing imported except a bounce of the drum tracks, it takes upwards of 10-20 seconds for my computer to figure out where the next transient is and slide the selection over.
2) When I Command+/ to Split Region by Locator, it removes my marquee selection. If I were to use this method, I would need to re-select everything every time I make a cut.
Any other Logic users out there have the same problems, or any other methods of quantizing by hand/without Flex?