I saw Adimiron, Jungle Rot, Rings of Saturn and Suffocation back in April. My second concert ever(first was Fozzy a few years ago).
Adimiron got a really sad response in Toronto... I almost felt bad for them. The lead singer was constantly demanding that people get up close to the stage and nobody went. They were pretty good.
Jungle Rot was awesome, super precise and a headbangin' good time.
Rings of Saturn were pretty good too. Nowhere near the quality of the Dingir album but they're really young and that stuff doesn't translate well live anyway. They can definitely play what's on the album. I thought the drummer was the weakest of the bunch but they got a new drummer(Jungle Rot's drummer ironically) so hopefully that works out better for them. The venue's sound setup emphasized the vocals and the drums by far so the drummers were under the microscope.
Suffocation was as tight as a noose. I honestly don't like the music but I could appreciate how rock solid they are live.
Of the bunch, Rings of Saturn musically are my favorite and that's why I went. I dug Jungle Rot the most in a live setting though.