In my opinion, Quality*Quantity such that profit is maximized is optimal...
I see this often stated, but for each player, this is different..
Ie. if your profit per table per hour is something like:
Tables - Profit per hour
1 - $10
2 - $ 7
3 - $ 6
4 - $ 5
5 - $ 4
6 - $ 3
7 - $ 2
8 - $ 1.50
9 - $ 1
10- $ 0.50
11- $ 0.25
12- $ 0
the total profit would be maximized at either 4 or 5 tabling, and I would say in the long run, you will
improve your game more by playing 4 tables over 5, so based on this I would 4 table. Of course this is just a hypothetical example, but the underlying principle is obvious; if your goal is profit, everything you do should be to maximize long-run profit. If you are planning on
moving up stakes, it may be worth your while to lower the number of tables you play before you move up stakes, to get used to making
reads, and observe some higher stakes simultaneously to note the differences in playing styles between your
stake and the next.
Simple economics, but I fear it may be overlooked. If your goal is profit, which is generally my assumption, that should be what you base your playing on. It isn't this easy in practice, but the concepts are the same.