I thought it was better than the first one if I'm honest. Builds on the story of the original in interesting ways, and it has epic visuals and some neat sci-fi concepts. (And it's also got the hottest 3-way ever, which is a bonus.) Though I also don't have much in the way of nostalgia for the original, which will probably make a big difference for some people.
This reminds me a little of Mad Max Fury Road in that it's building on a world that was always pretty cool but was never particularly a favourite of mine, in a way that appeals to me more than the original.