I know Bart said that most likely your local games would be better than playing NL during the wsop. that said I always thought the wekeends where there were the !k buy in would be good because the players who are just awful come to take their shot at glory.
I can say that I played both the 1/3 and the 2/5 yesterday (while I was waiting for my BigO game to open) and the play was pretty bad. Players not reading their hands let alone their opponents.. Very straightforward, easy to play against.
If you do come on the weekend then I think playing at the rio wouldnt be too bad.. Later in the series I think the games get tougher as the weaker players bust their rolls.. So come early my friends and let manna fall from the heavens..