Well,
For me, I think I like the 10-seated the best. More players do mean more money. And 10 people is less then 20, 30. It seems to me that games with those many people, the hands be messed up. To many people in the pot and it's harder to get the better pot odds in a lower steated game. (I play on 9-steated mysyself). 6 seated r ok, but they doesnt pay more then 9 or 10 seated. But I think there better then the 20, or 30.
Second, if u can play well at 10 seated table, then stay there. Why change if u r winning..
The Best There Is, The Best There Was, The Best There Ever Will Be.