I've only had 1.5 hours on a Cirrus SR20 - this was with a very knowledgeable instructor at North Weald who is an official Cirrus training partner - and it was excellent fun, although the speed control in the circuit did take some getting used to.
This was when I was thinking of joining the now defunct Cirrus group that were being run from Blackpool Airport by a person of dubious character...Fortunately I decided that is was just too expensive for me to justify joining based on what I do.
I believe the recommended minimum training time is 10 hours to get up to speed on the glass cockpit side of the aircraft....