Thunderstone - Dominion killer?

I played a couple of solo games yesterday and was very impressed. The 'build a deck' mechanic of Dominion is, probably, the most interesting game mechanic of the last few years, and imitations were never going to take long to appear. Thunderstone borrows (steals?) the mechanic and uses it to make a fun dungeon crawl game. Like Dominion the main interaction between players is the race to the finish though there are interesting timing questions as you take the limited saupply of heroes. Thuderstone is a little rough around the edges and there are a few rules that are not clear without a reference to the Geek. However, it is a fine game and already has a first expansion scheduled for release in the Spring. I suspect that, like Dominion, the game will be even better with expansions

It does not have the finesse of Dominion, but Dominion does not have the fun of Thunderstone.