Just finished reading Civil War on my iPod. Reasonably sure it end up cheaper than buying a trade and I was able to read it on the bus
I really liked it. Much more than I thought I would.
First things first, Civil War fails spectacularly as any sort of political commentary. The build up to the event is fairly contrived (are citizens of the Marvel universe really that stupid) and there is not enough exploration into what the SHRA (Superhero Registation Act) would mean to everyday people. But thats ok, I dont read Marvel comics to form my political opinions.
As far as the story, it works fairly well. There is an understandable central conflict, and the tension seems to build each issue without getting ridiculous (Blackest Night im looking at you). There were quite a ew plot threads (the main Tony and Cap threads + Spidey, FF, Doctor Strange) but it didnt become distracting.
Ending was a bit of a let down, but seeing as the alternative was basically either Tony or Cap being murdered its servicable. And the lead in to the initiative seem interesting enough. Art was awesome, but you didnt need me to tell you that.
All in all, despite the somewhat questionable characterization of a few characters (Reed comes across as a real dick, but hes consistantly a dick for the whole thing) and the laughable attempt to say something political, this is a pretty damn good crossover.