I agree with Grumbledook that the full ring tables are softer than the 6max ones.
I personally like to play 6max as well because a lot of the times, players play WAY too loose and don't buy-in for enough and automatically disadvantage themselves (i.e. $10 buy-in at .5/1 limit).
Perosnally, I prefer SNGs to cash games, I have started to 3-table them. Once I get good at this, and get a computer with a bigger screen, I will move on to 4-tabling...