I found Stapleford to be an excellent school, I completed the CPL/ME/IR July this year. The only problem I had was with instructors changing the booking sheet and not bothering to tell the student or anyone else
Some instructors should try to engage brain and pick up the phone, it's not hard!!
The head of training runs a tight ship with very little bull s*it. The DA42 is an excellent aircraft for the IR but a higher standard will be expected on the test compared with the Seneca, etc. The aircraft used for the CPL are all in good condition and are fairly new.
Don't let the above problem put you off, Stapleford is still a highly professional school with some very experienced instructors to help you along way.
I hope this helps.
PM me if you want to know anymore.