[thespecialist]

the better players at NL can reduce the risk and increase the EV by a lot when compared to limit, however casino's do not or run very few NL tables compared to limit because a) it takes more time, and more importantly b) the good players really drain the fishes bankrolls a lot faster, thus less customers for the casino.

so to summarize, for the good players NL would definately be the choice for profit/loss, and for the losing players -> limit would be a lot better choice to keep a tighter hold on your money ; )