I picked up a 2x12 today and am very impressed with this cab. It's ported, closed back, built like a tank, and sounds huge. I don't know how many guys here use them but I think it sounds pretty dang good!
The G-flex I have to say was a step in the right direction for the mass markets, and was one of the better sounding cabinets I had before I went into business. The build quality was suspect (don't know if it go better) but the sonic results were good. Loved the handles too.