scouser

Hi
I know quite a lot of you have nice setups in terms of multi monitors. I've posted on a uk hardware forum but got almost fuck all replies.

At the moment i've got two 17" monitors. thinking of getting a 20" tft and running 3 monitors... (so it'll be 17" crt , 19" tft , 17"tft)

Is going from 2 to 3 as handy as going from 1 to 2?

Also what pci graphics card is it worth getting (my gfx card atm only has space for two monitors...)