If you're into like.. more space rock/progressive mellow music, check out The Sky Moves Sideways. Up the Downstair is quite progressive I guess you could say. There really aren't a lot of great tracks on their first album. Nine Cats, Radioactive Toy, Footprints... too name a few.
All of PT's albums are really good albums, imo. Stupid Dream, Lightbulb Sun, and even Recordings are just as good overall albums as Deadwing, Signify, In Absentia.
In Absentia is still the best overall album I think they've put together.
It really depends on the mood your in, as to which album to dive into.