It's a good movie, not iconic though. Not a classic.
Strictly speaking, I didn't say it was a classic, only that it was better than some movies considered classics from the era it was appearing to emulate. I do think it will be remembered better in hindsight than it is now.
A movie I might compare it to is 2010. While there was some publicity for it as a sequel to a "classic" movie, there wasn't much buzz about it in general. It was a sober, quiet, intelligent movie but not a blockbuster as we understand them today. It hardly made a blip on the radar, but at least in movie circles and scifi circles, it's considered a classic in it's own right these days...despite being in the bargain bin.