I looked at them, and I've been reading everything I can get my hands on bout coilovers, and different makes, options, advantages. Initially I was planning on getting dampening adjustable, its just one feature you don't really need, nor would I know what to adjust, or why it is needed. Unless you're gonna really track your car, its unecesarry. I've decided on the H&R mainly because of the lifetime warranty, others are KW Var 1 & 2 (only difference being 2 is dampening adjustable) Koni's are also available, and from my understanding, almost identical to pss9's but for 400 cheaper.
As for pss9's being available for our car yet, I haven't seen them, but I'm fairly sure they are out, if not the A3 would work I believe.
As for where to buy them, come on man, do a search, Parts4vws.com, you can try NAmotorsports, Evolutionsmotorsports also for other kits.
Good luck, let me know how the intstall goes