This is a very nice 23.6' monitor. http://www.newegg.com/Product/ProductList.aspx?Submit=E...
Or this one on the same page
ASUS VH232H Glossy Black 23" 5ms Widescreen Full HD 1080p LCD Monitor 300 cd/m2 ASCR 20000:1 w/Speakers & HDMI
Looked at those 2 games you mentioned and couldnt find minimum PC specs but they look like they would be georgeous with a 560Ti and a 23' or 24" monitor at 1920X1080
Would I be better off waiting for the new cards since my 8800GTS still works? I mainly want to play TOR and D3.
Your 8800GTS is a decent card. If you have no problems with what you are running now, I would wait and see how you do with the new games.
From what I read, the new games are not that demanding. That makes sense, since game vendors want the largest possible market.
There is little downside in waiting, since graphics cards tend to deliver better performance per dollar over time.
The new cards will not be here until next year. The 28nm process will allow some combination of higher top end performance, lower power, lower heat, and lower cost. Expect them to be priced at what the market will bear, and at some premium to then current price performance norms.
Still, you might be able to score a very good card during the black friday sales.