When I played at the Wynn, I bought in for $200. As the other poster said, the lack of a maximum buy in really made no difference in the games I played in. Most people bought in for somewhere between $100 and $200.

There was an older guy who had a huge amount of chips on the table, probably over $1000, but I think he was using it for show (he also was dressed as a cowboy). While he might have enjoyed people gawking at his stack from the rail, he did not use the stack to intimidate or be aggressive. He did call a straddle once or twice, for no apparent reason. I did play 1-3 on the same table as him, but the other two times I was playing at the Wynn, he was playing 2-5 instead.

I don't think you need to worry about the lack of a maximium buy in, at least if you are going to play 1-3 No Limit. Since there is a 2-5 game always going on as well, I am guessing most higher limit players would do that, instead of 1-3.

If anything, the lack of a maximum probably causes the play to be tighter, with less action. There was definitely less action at the Wynn tables than the other casinos I played at.