I'm going to rank the games by the consoles I have owned.
One thing about Smackdown 2 that I dislike is the career mode. The loading times, battle meters and the inaccuracies. E.g. if you win the King of the Ring or Royal Rumble, you don't get a title shot. The game was cool for its time though.
Here Comes The Pain
Shut Your Mouth
Here comes the Pain was just awesome. The last WWE game that had exciting and fun backstage options such as the parking lot and the times square. Not to mention the great career mode that allowed the player to take control of his wrestler's career. For instance, you can decide what show to be on, demand title shots, make new friends/enemies and so on. Shut Your Mouth was also fun at the time with a roster that I didn't expect to see. Almost everyone from that period was there, even Shawn Stasiak!
SVR 07 - I played this on Xbox 360 but still way better than SVR 09.
I think WWE 13 is the best wrestling game since SVR 2006. The AE mode, the huge roster (apprantly the largest ever), better universe mode and more options within the game such as create a championship, arena, story, moves, wrestler and so on. I know other games had this but WWE 13 just improves them. SVR 7 is my second choice. SVR 09 and SVR 2010 are really similar but the only difference is that SVR 09 has a better Road 2 Wrestlemania storylines. Chris Jericho's and Undertaker's Road 2 Wrestlemania are great.