I must admit having a problem with the very concept of "prog metal". I'm like that bird who comes flying along and then goes THUD into the window glass ... that is called 70s prog rock. While everybody else is flying merrily along, I'm stuck in the 70s. There is no getting around it. Arrested development, probably.
Only today, I was at the post office and picked up a specimen of "Pet Arts" by the Petards, on CD, ordered through Amazon. German chaps, from 1971. "Krautrock" they used to call it. Not so much any kind of metal as perhaps "heavy psych" ... with tendencies towards "space rock". (Hawkwind is the big dick in the genre of space rock.) OK that was a lot of unnececessary information ... point is, as soon as I read the word "prog" my mind goes all 70s on me. It can't be helped.
That being said, I did in fact enjoy the album "Affinity" by Haken (that's pronounced like the word "taken"). I believe they get sorted under the genre of "prog metal". It was released a couple of years ago.