I have Seven Audio treatments (from Poland). Excellent quality and workmanship. Also, less expensive than GIK and Vicoustic.
I imported a whole pallet of treatments for my room. I also have my old trusty ASC tube traps.
Do yourself a favor and consider Seven Audio. I was concerned about importation to Florida and it was painless. Delivered straight to my garage.
Lukasz is a craftsman. He calculated the needs for my room and his suggestions were similar to Vicoustic. GIK suggested 4 times more bass traps.