regarding the G seat, i've never used a different platform so I cant do a direct comparison, but I do like the seat, there are pros and cons with it - but overall I had blast building it and learned a lot along the way. Essentially the Bergison's G seat replicates heave, sway, and surge. You can mix in a little roll, pitch, and yaw - but in most cases it's not really necessary. The seat flaps and belt do give the sensation of the g forces although its probably more effective replicating strong positive g's than strong negative g's. This really isnt a problem if you fly the aircraft properly and invert rather than placing strong negative g's on the aircraft which i'm told pilots and airframes like to avoid anyway. What i didnt like about the first version of hte chair was that there was some slack in the rods and motors when direction was reversed and the movement seemed a little jerky for my tastes. The modifications being done now (different rod connection type, and servos instead of dc motors) should address these issues. If indeed that's the case when I'm done, I'll love the seat for high-g flight.
