Just a quick post to close this one out...
I've been asking around on some other forums as well...
I've come to the opinion that:
a) you can go too wide with dual monitors and to my 2x24" flat screens (about 40" wide horizontally in total) is a good comfortable width for cad. I also have a 2x27" setup at home, which is a tad too big.
b) I've yet to try out a curved monitor(s) but consensus is that they don't pose any issue for cad. You see the odd post from the uninformed saying it is hard to draw a straight line on a curved monitor!!!
c) since the curved monitors come in such wide formats, there is not real reason to go for a dual set up. Better to just have a single monitor. I'd probably go for a 35 incher which still come reasonably cheap but as far as I can tell seem big enough (as I said I'm yet to try one).
d) I learnt some new tricks with window sizing - drag a window to the edge to get a half screen, to the corner to get a quarter screen size. I mention this because with dual monitors it is nice to instantly resize a window to the full monitor extent. You can sort of achieve the same thing with a wide single monitor using those tricks.
I'll report back with a review if I decide to do anything
Mick
Civil3d user in Australia since 2012.