I play it regularly. Several times a month, actually.
Two of the things that I love about it are: Alternating Activations and Outbreaks Campaign System.
My big beef with most games out there is the down-time between actions. When playing SST, it wouldn\'t be unheard of to go 30-60 minutes before I get to move again. With Rezolution, you use Alternating Activations. I move one unit/model and then you move one unit/model. It keeps you active and never bored.
With the release of Outbreak, they added a Campaign System. This adds in that touch of RPG\'s, where you get \"experience points\" to buff up your character. In Rez Campaigns, you get Resource Points to buy gear and weapons for your models and Campaign Points which are used a lot like \"Feats\" in D&D.
You don\'t have to plunk a lot of money in it to get started, most faction starter sets are around $30 US and they have a nice and friendly Forum.
If you have any more questions, I don\'t mind pimping my favorite game!