I find the mechaincs of the 3E game simpler...but that's about it...I find the game considerably harder to run as a DM..there are tons of "hidden" rules, modifiers, exceptions, special abilities,and non-transparent feats that make the game more "mechanical" in nature. 3E is daunting for a DM who does not have a healthy command of the rules (not mechanics..rules). I know had 3E been around in 1978 when I started DMing, I'd likeley never have DMed again. I feel sorry for kids coming over from the adventure game box to the full blown rules...there's no stepping stone like the B/X boxes provided.
Not that 1E or other versions were perfect..they all have thier strengths and weaknesses....
3E is to D&D what RMSS is to RM. It standardized many things and was a much tighter, more cohesive rule set...it is also harder to run, and is more complicated in almost every area of the game.
IMO of course...