My old card has finally died. I'm looking for something that will run three monitors. I don't play games on my studio pc. 
 
What works well for you?

If you do not do video work, get the cheapest card you can which runs 3 monitors.
I got an EVGA brand HD6450 ATI card which runs 3 1920x1024 monitors just fine. I think I paid < $50. ALso it is fanless which is a big plus in the studio. This chipset may be obsolete (I got it ~3 years ago) but I am sure you can find something similar. Mine works with Win 10 (in fact W10 found the driver all by itself) and before that win 7 & 8.1 too.
For DAWs I advise against hi-end video cards. They take up PCI lanes and power and can be finicky with some mobos.
ATI/AMD chipsets also seem to provide more outputs on cheaper cards than Nvidia.
Be sure to get the proper PCI or PCIe that fits your motherboard.
Here are a quite a few.
https://www.amazon.com/s/...TF8&qid=1462399046
IIRC I got the 1GB one which are really dirt cheap now.
Tigerdirect.com used to have a search for option that included number of outputs ot just google video card 3 monitors.
 

Fanless Radeon cards

Thanks for the responses. This confirms what I was already thinking, which is that I need to get away from Nvidia.