I frequently play a NL ring game and a MTT at the same time and have had no problems managing the subtle differences in the strategy. Occasionally...like last night I will play a ring game and 2 MTTs - it is more difficult for me to manage (meaning it is not easy) which I like - it certainly helps me remain focused and sharp (less likely to slip into auto-pilot) I stil don't know how people play 4+ tables at once...but it was not too long ago I couldn't imagine playing more than one table effectively. I believe it simply takes time to stretch and strengthen your mind/focus...it comes with practice. I suppose the best advice is to try it out and see if it works for you. I'll tell you when I started playing a NL ring game along with a MTT...I immediately played better in the MTT's...started getting into the money on a consistant basis. It was a good move for me - try it and see how it goes.