Just considering adding some more monitors/video cards to a system and was
wondering if there are any OK video cards out there that use PCI?
"Best" at what? If you have no need for 3D gaming with it,
there's probably some other parameter that matters most? If
it need not have DVI, there are quite a few more
possibilities. If it need not support high res. and color
depth, even more possibilities. Other factors such as heat
generation, power consumption or cost might be a factor too
but you've made no mention of these variables.
Generally a modern alternative would be a low-mid range card
from nVidia or ATI. ATI has Radeon 9xxx series in PCI and
nVidia FX5700(LE?). WIthout need for 3D gaming either of
them would be overkill, and yet a more modern card will also
be more likely to have DVI.
If you just wanted something cheap, very low heat and power,
an ATI RageXL might suffice, though the output can be a
little blurrier than more modern cards at higher resolutions
and they only have 8MB (maybe 16MB on some, can't remember)
memory so highest res. and color is also a limitation.