I have approx $600 to spend on a machine, which seems to be the going rate for a good table top system. From all that I've read between cranks and drop weights, it seems to come down to these two. Not to say that Gammas aren't good either but the majority seems to be these two. I've been debating, with myself, between the Eco with double action clamps and the Revo which comes with same type of clamps. On the one hand, drop weights never need calibrating, whereas cranks may need to be eventually. The mounting system and clamps are both good on both systems. Service is apparently good for both, though recently I've been reading a bit of problems with Laserfibre's. I get the impression that the crank models are easier to operate, whereas you have to wrap the string for the drop weights. One advantage the Revo has, I think, is that if so desired, at some point you can put a 'Wise' tension head on the Alpha, which seems to be well liked. I just can't figure out which would be the best table top. Can you help out?