I would definitely play at least 2 tables. If you want to play the player and really pay attention to your opponents, you can still play 2 tables, and put 90% of your concentration on 1 table while you just switch over to the other when you have to make a decision there. When I play tourneys, I will 2 or 3 table, and put most of my attention on the tourney. If I get down to 4 or 5 players at a SNG, or deep into a MTT, I'll close down the other tables to concentrate on that.