I've had back surgery, so i've tried them all, thudbuster, rockshox, use...
I think the thudbuster had the nicest feel, however it's rearward movement will strech out the spine, and my back didn't like that.
Currently i use a post called NitroPro. It has twice the travel and plushness of the other pogo-style posts, but has no pogo or bouncy feel at all. Actually it's just the opposite, after it absorbs a bump it feels like it gets stuck and takes a while to get back to it's neutral (uncompressed) position. But that doesn't bother me, so it's what i use most.