I supplement my Cirrus flying with additional hours from Cumulus (just commenced year 3, this week).
I have been accessing Bournemouth and Blackbushe based aircraft over that time. My experience has been that Cumulus delivers what it says on the tin.
In particular the aircraft have always been in extremely presentable condition (amongst rental fleets theirs really stand out on this) rather than in a state I have to make excuses for to my pax.
You can buy a small block (10 hours) and give them a try.
As always, yours or others mileage may vary. I am nothing other than a paying customer by the way.