While I haven't had much luck with the cleansers and moisturisers, there are a couple of Dermalogica products that I love and repurchase:

Multi-active Toner: very refreshing, makes your skin feel amazing.
Skin Prep Scrub: a great exfoliant, quite gentle.
Multivitamin Power Recovery Masque: like a big drink. Seriously good after a few late nights or if your skin needs a pick-me-up.

The line is kinda exxy but you can get it cheaper if you buy from a reputable overseas skincare or beauty site. I've had bad experiences with strawberrynet (fakes) but I know others who haven't had any issues.

Another option is to get a travel size or 'try it' pack from a salon - that way you can get a good feel for an entire skincare routine without having to invest big bucks only to find it doesn't work for you.