I took a punt on the new set too as I found it for a decent discount and it looked good value.
The range of colours is good, but not quite as comprehensive as the
GW range that I'm used too.
The only real issue/adjustment I've come across so far is that they do not have anywhere near the coverage of the
GW pains, so seem to take many many more layers. While this is good for layering, the initial base coating of areas takes a lot longer. As a result, I've ended up still using the
GW base paints and find this an awesome combination.
I think like others on this board have said before, each paint range has pro's and con's, and I do think the coverage of the Army Painter paints is the main con. Combine this with some kind of base paint of your preference though, and problem solved
edit : Totally forgot to mention the washes!! This is one of the stand out areas for Army Painter - their washes are amazing. I don't think these latest ones are any different to the previous ones, as they still behave the same way and are still awesome.