Stars: Cascading tables vs seeing every table (ie: no overlap)

[AA Suited]

There are lots of players who have multiple 20+ inch LCD monitors. They play w/o overlapping tables. 2 20" LCD = 8 tables w/o resizing.

Then there are those that 16 table on a crappy 17" crt and cascade them one behind another.

The obvious advantage of cascading the tables is that you can play more tables. That's more FPP/hr.

But how much does your game play deteriote? (ie: How much lower is your ROI?)