I'm Australian and have used Alpha-H in the past. I think it's a good line and there are still some products of theirs I want to try, mainly the masks.
These are the products I have tried (I have normal skin):
Liquid Gold (glycolic treatment) was good but I think it ended up being too drying on my skin. My mum liked it though, she went through a couple of bottles before moving onto something new (she has my problem - product junkie!).
Microcleanse: this stuff is great. It cleanses really well and it's not too drying. I only had a sample tube.
10% Balancing Moisturiser: only had a sample of this but from memory it was ok. It mustn't have impressed me that much otherwise I'd have bought a full-sized bottle.
Balancing Cleanser: this was really quite nice but I prefer a foaming cleanser (this is more a cream cleanser).
I've tried the eye creams and they didn't impress me too much, but I'm not a big eye cream person.
http://forum.adorebeauty.com.au/ has more reviews (their online store also sells Alpha-H). You can also find more reviews etc at vogue.com.au forums.