I listened to all the material from beginning to end, then listened again. So, just an opinion.
It's amazing how listening to everything in hindsight helps to reevaluate opinions and perceptions. Someone mentioned that Visions is a "prog metal by the numbers" and I agree. Aquarius is too. And that is why I have always taked them as "smaller albums" in contrast to The Mountain, a masterpiece. Listening to everything again and considering everything that came after The Mountain improved my opinion of the first two records. Ok, "prog metal by the numbers", but better than it would come later.
I do remember that liking Restoration and not liking Affinity, but I didn't remember those records in detail anymore. Restoration is a great remake of songs from the first demo. A great EP.
Affinity has improved in my concept. It is full of modern prog metal/djent features and I understand why I promptly discarded it four years ago. To mention just one example: 1985 is a great song (the best on the record), full of interesting passages, but it has that heavy riff at 2:36 that bothers me so much. And riffs similar to this one are sprinkled throughout the band's discography, especially in recent years.
But OK. I can now be more open-minded, let these characteristics aside and enjoy what I like. And there are a lot of interesting things on the album.
And then we go for Vector / Virus. I confess that I had an even worse memory of Vector. I didn't remember the beautiful flugelhorn in Host (the best song on the album). But it is not a good album. I don't like The Good Doctor, Puzzle Box, Veil. And I think Nil By Mouth is atrocious (I wish I could go back in time with this song, back in the 90s / 2000s, and show it to all my acquaintances who said that DT was self indulgent. "If you were to think that DT was self indulgent, listen to this! ")
Finally, Virus. As the album is recent I will listen to a few more times. For now, I just liked Prosthetic (that works for me) and Canary Yellow, nothing more. Only Stars is boring, which is terrible because I usually like Haken's mellow songs. I hate Invasion and I will be very disappointed if Messiah Complex does not win the "most disjointed progressive suite award of 2020".
It is undeniable that the band is currently delivering a sound that meets what seems to be the preference of fans of the style. It still looks like Haken, but it looks more and more like the endless "new prog metal / djent bands".
I still think The Mountain is a kind of a "one shot" by the band, but my adventure ended up being positive, because I managed to have better opinions about Aquarius, Visions (in a way) and Affinity. I guess it's a kind of happy end.