I have the cadlights artisan 50 cube and have replaced the sump (baffle layout sucks), return pump (to loud), and skimmer (read below) that came with the package. Build quality on my tank and stand is fine and the stand is solid but I probably wouldn't buy another one of their setups, at least not a package.
As far as customer service, my experience was ok, they just thought they were doing me a favor by substituting a larger skimmer because they were out of the one it was supposed to come with. Problem was, it was their HOB model and wouldn't fit in the sump area! lol