Quoted from T7:IMHO - I see almost no practical difference between the Pro and LE. To me it's simply a few *blingy* mods difference (which are nice in the dark). I've played both a TRON LE and a Pro side by side and there was no difference in a well lit room. In the dark the LE has the extra lighting effects. The game play is 99% exactly the same except for the drop targets - which I prefer the standups on the Pro for the speed and bank shots. People are fooling themselves when they think the build quality is so much better on the LE - really? There's only a handful of part differences in the entire game - run on the same assembly line. If you're more of a collector than a player, then it's probably best to get the LE. If you're more of a player then it really doesn't make much of a difference - again IMHO. Great game Pro or LE BTW.
I consider myself a player more than a collector, but for me - I have to have LE. I want the definitive experience. I want DAFT PUNK on the ramps. I want End of Line Multiball. I want the ramp light/color choreography to sync the way Lyman intended.
If price and scarcity wasn't a factor, everyone would want the LE and there'd be no argument. Most people who have the LE didn't pay the piper for one...and that's why they're totally happy with their games.