Monitor Question

I have a reasonable GPU, a HD 7850 2GB.

I am currently VERY happy with it's performance at 1440x900 resolution.

My  question is:

For my £80 budget, do i buy two more 19" 1440x900 monitors (I can get a 3 monitor stand for free from my Dad's work) so i can do either eyefinity or run in 2700x1440 OR do i buy 1 low end 21.5" 1080p monitor?

 

Pixel for pixel, the eyefinity will be best, but i am not sure.

I sit far enough away from my monitors that the 7 or 8 ppi difference doesn't matter to me.

 

 

Thanks, Pribprib!

I would wait off both if you can. A 1080 is much nicer than a 900, I went the same path. But in a year or two 2560x1440 monitors will be nice and cheap. I would wait for either one of those or a few 1080 monitors. 

The 7850 would probably be okay with an eyefinity on 900p displays but It will show it's age much faster than it should if you do it.