I liked it, but it wasn't up there with the best of SG1. I figure the writer's hands were tied as they had to wrap up the whole Ori story, so it naturally felt like a continuation of the series rahter than a stand-alone movie. I'm looking forward to the next ones, but I can't help but think the money wouldn't have been better spent on a few three or four episode mini-arcs.
Having said all that, any Stargate is better than no Stargate, but that's not an attitude that makes for great storytelling.