I actually just picked up a tactile pro for $70 on ebay. The only indication that it wasn't new was a small scratch over the F14 key. Not even any keyboard chow, either, which was surprising.
I actually really liked the way it felt. The sliders and springs are swappable with an AEKII, if you like the dampened sliders, but personally I prefer the feel of the switches it came with. As someone said, they claim to be fukkas, but I actually think I prefer them to the dampened complicated in the AEKII or the blacks in the Dell AT101. Just a smoother, better feel to them, even compared to cleaned dell switches.
Also, to my fingers (and a couple other people's), they are actually lighter than what are in the AEKII. But I believe they are actually heavier. I didn't test it.
The sound is really great, too. Very vintage typewriter-y.
I ended up gifting it to a friend who just bought a new iMac and hated the bluetooth keyboard it came with.