Oh I know all too much about input lag. I used to have a big plasma TV and a few years back got this 52" Vizio gaming tv and have never looked for any other tv. I have a monitor I could play on but I don't know if the input lag difference is worth it. My tv has game mode obviously and playing without it is not possible. With the monitor it's playable on both game mode and non game mode so perhaps there is a difference.
I've been playing a few Conquest games on All Star while I get myself acquainted with zone hitting and so far it's not been too bad. Online will be a way different story though. I feel like there's lag in every swing online and it's a complete crap shoot whether you're on it or not.