I started listening to Porcupine Tree in September 2013. Funnily enough, it was another recommendation where I bought a specific album, didn't like it, then started listening to other albums, cycled through, and then found the original album to be the best one. That album is In Absentia, although I have a difficult relationship to it after digging through the song meanings.
@Gargron Was it The Incident that you bought?