[noodles]

^ What he said. For a wah, you want a real wah pedal. Line6 has the best simulation of all of the ones I have heard, and even then, it's not all that great.

I'd hold off on the Pro RackG until trying the gate in the G Major. It does what I need it to do, so I didn't need to spend more money and space in the rack on yet another unit. Remember, the more you have, the more that can go wrong. Build it up one piece at a time, and keep going back to guitar -> amp for a comparison. It is easy to get too far gone playing the gear game, and your tone winds up sounding like shit.