I remember the mountain bike mags raving about them in about 2005 ish, they won all the awards and recommendations from MBR I think, then for some reason went out of favour or just went off the radar. Always liked the look of them, but never ridden one.
That’s a lie actually, I have actually got a Mongoose full sus, but it’s an Amplifier from 1995. The back end is flexy, but it is light. I don;t think that’s the one you’re interested in though. 8)