I've tried out WTFast... It reduces ping tremendously... But trust me on this, you only get to use it for 30 days, after which, you either pay for the extension of the account or you reformat your computer to "reset" the IP log or whatever is reset when you format...
Leatrix Latency Redux doesn't do anything at all. It just takes up space on your computer. Don't try it. 'Nuf said.
Best way to reduce your ping is to just move closer to the server. For the people who live across the globe from the server, either find an ISP that boosts your connection to Over9000 or get rich, move closer to the server, install the game, and pawn the shit out of everyone with your awesome ping.
Anyway, that's my 2 cents =D