I recently picked up Spartan Games' Firestorm Armada. This is something we've been talking about off and on for a while, so I figured, "What the heck?" and just got them. I also picked up the optional card deck to accompany them.
I've been sitting on a copy of Full Thrust (which are now free) for some time now, and rules such as Sunder the Stars (also free), and all give you great space battles but Firestorm grabbed me for some reason. I've already bought the rules, but I'm still interested in hearing any experience y'all may already have with these.
Ironically, it was the models that really grabbed me and even more ironically I'm in no position to plop down fifty bucks right now for said models. Problem solved, as suggested here at Mik's Minis already, why not use ships similar to the micro-scale builds shown here on LEGO Thursdays? Why not indeed? So it looks like I'll be building some new ships to run the first few games with, probably a pair of matched cruisers per side or something. Here's some past candidates in one place: