The frame looks good, internal cable routing is a plus. A little sketchy on really steep downhills. The frame is really rigid, so it beats up up a little. For some reason it hurts my back a little on long climbs. This bike rocks, pick one up if you can.
Full suspension is overrated.
I have another Klein Pulse II if anyone is interested. My friend doesn't ride anymore, and asked me to sell it. The bike is just as sick as mine, e-mail me if you are interested. The Pulse was a great frame in 98 and the Trek 1000 series is at a lower level.