I agree GTA SA was probably not up to the mark of GTA VC but it has much more to explore than the earlire GTA versions. I was introduced to this series by my friend who was playing Vice City at his home. He gave me the discs of both GTA III and VC.
Now that I got a Wii, I have tried the Godfather as well(the Blackhand edition). The graphics seem to be better to me than those of GTA SA. BUT is still not upto the mark of GTA. Wonder when Rockstar releases a special Wii edition of GTA with all those wii exclusive moves. May be they will launch a GTA Wii.
Many of YOu guys have been talking of Mafia being a much better game. Haven't played it yet, but all your remarks, i am being tempted now to try it out.