Well, I guess I fall into a couple of camps here...
D20 is not my
favourite game, but I have a
lot of fun playing it, so that might throw me out to begin with!
Of the two versions you list, I am more or less forced to vote for 3.0, mainly because I haven't picked up the 3.5 books, nor am I likely to in the near future -- from what I have heard of the 3.5 changes, they do not make a major impact on my style of gaming (pretty loose with the rules to begin with). I have downloaded the 3.5 SRD, have noted it in passing, have generally liked the changes to the Ranger, but other than that I find it neutral to retrograde. It just seems like one groups set of House Rules.
For my own part, I have put together extensive House Rules of my own, including rules to greatly speed combat, alter a great number of spells, drop various races, add in social structures, change prices, etc. The rules are so extensive at this point that some say I do not truly play 3.0 or even D&D, per se, anymore, but some other D20-variant.
So instead I play D&D 3.Wombat.
Always have, always will
