Hi,
ADV/ADV SP have a different Icon set, you can see this in the screen shots, otherwise they are pretty much the same, the ADV set will run a little faster.
Both packs use Scalos so are quite memory hungry, after booting you could see up to 4mb memory usage so as you only have 10mb+2 you might consider this excessive.
The 3.9 pack is also pretty heavy on the memory side of things but performance can be better with PeterK's Icon Library, have a read here:
http://eab.abime.net/showthread.php?t=64079
You can get it here:
http://aminet.net/package/util/libs/IconLib_46.4
I recommend just for Gaming stick with the Lite Version and have lots of free memory for pre-loading big games