Fubar057:
Reason I'm asking is that I need to upgrade my Iron to better deal with the Sandbaggers that refuse to grow some nuts and move up to Master Tier. Thanks.
Stop playing TourPros and below, then.
From people I've talked to, the G's are great if you like slow meters but suffer from power drainage when you apply backspin and/or miss the ding. They are also affected by wind more....and don't stop near as well with a moderate tailwind.
The Burners stop really well, fly really far and high, but punish the bujeezus out of you if you miss the ding by much.
Most agree that the Burners and R11s (though not in your question) are the clubs that can compete at Legend. However, I played a couple Legends lately playing the G's and they absolutely kicked my butt.
The bottom line is: Get to know whichever you choose. Both perform very well.