All three are good. For Civ 3 I had to turn off music for a year until I could upgrade my computer. No music turns a program slower than a snail in molasses into a great program faster than my runs after Taco Bell. With no music my P2 300 MHz machine with 64 MB of memory could run Civ 3 without significant slowdowns.
I still play Civ 3 whenever I'm bored with other games. Eliminating trading routes was the #1 reason I like Civ 3 better than Civ 2. However, you can still get stuck into the more power = more cities = forever to finish game routine.
Flamingelephant: I had trouble with Civ 3 and Win XP under certain patch versions of Civ 3. Other patches work great though.