I had the opportunity to look at Topogun the other day, and I have to say that I was really impressed; it was like retopology using zspheres, but much easier, especially in just being able to see what on earth i was doing.
Having said that, the images I've seen from Verold make it look like an even easier way to retopo that Topogun. The price, ability, ease of use, etc are still unknown, but having used Topogun all it took was another look at the images from Verold to get me excited again. I'm really looking forward to the beta.
... and as an aside, my typing really does suck first thing in the morning, lol. I had to edit this post sooo much