From the ‘big 3’ they seem to have quite a good reputation.
However, if you’re looking to do your CPL ME/IR with the price you’ve quoted I’d seriously consider Diamond Flight Academy Sweden. Based in Kalmar they take around 4 pilots per month and have a seriously good reputation. All flying done in the DA42. I’ve spoke to numerous ex-students who have nothing but praise for them. Last time I checked taking into account the exchange rate the whole course (flying, test fees, accommodation) worked out just over 28K GBP.
I believe they’re a Wings Alliance partner so Alex may be able to shed a bit more light on them as I can only speak from my own research.