I have a bunch of their stuff, generally speaking I'd say the design and cut is good but the manufacturing quality can vary a lot! Check all the seams carefully before buying.
I'm a climber so I might look at different products and features than you but here is my take… Compared to most american brands the cut is very different, much slimmer/athletic and longer arms. I'm 183 cm, 78 kg with fairly broad shoulders and slim waist(29-30 inch), I'm wearing a large and it can be a bit tight over the shoulder and chest but very generous around my stomach. The hoods tend to be a bit too small for my liking but OK. But where they really shine is the cut around the shoulders and armpit. I can usually lift my arms up and don't have the waist pull up too much. On par with arc'teryx.
Some of the stuff I have:
Neo Stretch Pants – very good with a high slim waist, good range of movement, full length side-zips etc. Good production quality but dont fit over ski boots.
Alpine Pull-over. First generation of their current Alpine Jacket. A thicker windshirt. By far the best garment I've ever bought!
Neutrino Endurance Plus Jacket – Nice and really good thick-ish down jacket. Takes a helmet well but the waist is too narrow to easily go over a harness :( Works but not good enough.
Micro Light Alpine Jacket – Terrible seams, loose threads, not straight, too close to edges… bought it second hand but I would never have payed full price for it.