Table Size: 9 person versus 10 person lond-hand

[Adam Selene]

I've noticed that some large poker rooms (e.g. PokerStars) use 9 person long-hand tables and others (e.g. PartyPoker) uses 10 person long-hand tables.

Is there are substantial preference amongst skilled players for one or the other? Is the difference in hand probabilities and matchups probabilities significant enough to be noticeable?