Hex is a great attraction, I love it. It's a brilliant exhibition of the ruins, it gets it just right and leaves a great impression. But it's really very basic, some props in the Towers ruins with a tried-and-tested ride type as a finale. I'm not wanting to downplay Hex, it's perfect, but I find it a bit overblown whenever fans say it's one of the best themed attractions in the continent.
Definitely the best themed madhouse. I think its atmosphere is the best thing about it (because of the Towers). But there are way more detailed, creative, well crafted, entertaining (whichever way you want to cut it) dark rides out there on their own merits. Not necessarily bigger or more flash.
I think enthusiasts put it on such a high pedestal because most great dark rides in Europe are for families. Hex has a more serious tone because of its incredible real life setting and enthusiasts like this. I first did Hex when I was young and I thought it was great, it was much better when it was newer too (some of the subtleties lost in recent years). But that's mostly owed to the incredible Towers I feel. It's a shame to overlook the incredible craft and creativity that's gone into better dark rides out there at parks like Efteling for example.
By the way, dont let me rain on your parade @ChessingtonSam , since you've just done it first time. It really is great. I'm more talking about the pedestal it gets put on by many enthusiasts in the UK.