I'm afraid that poll will lead to nowhere.
IMHO you'd have to ask first if someone likes mods at all.
There a quite big comunnity of purists/cable modem users/ computer illiterates who simply prefer unmodded way over anything. And won't ever try a mod, so their opinion (while respected!) isn't based on knowledge, thus doesn't count
.
But then, I think there is a number of excellent mods, and depending on you personnal preferences (say, Fantasy=WH2; Builder=RaR; Warmonger=AU; World Map=Rhye's etc), such a mod may indeed be better for you than the unmodded game.
I for one consider unmodded C3C, the Firaxis' Conquests, and RaR all different games, and I like them all. So nothing gets my vote.
For PtW, however, I can say that I
only enjoyed DyP. TEThurkan didn't run with my stone-age system, and other great full scale mods weren't around. And unmodded VC3/PtW offers a unit selection I hate, plus that stupid early map/contact-trading.