I've been with Flying Time at Shoreham (previously the Flying Hut) for some time and have found them friendly and welcoming. One aspect I really like is that there is no club joining fee, (an extra charge I have always found a bit irritating for the priviledge of sitting on a threadbare settee in some nissen hut).
Flying Time seems to have had an injection of cash recently, hence the growing 'fleet' of DA40s. They also have a Diamond Twin - very classy machine.
I have flown most single engined Cessnas and Pipers plus odds and sods such as Chipmunks and even Bolkows (OK, I am a bit past it, I know) and the DA40 diesel is a delight to fly. Very aerodynamic, doesn't want to slow down until you chop the power and drop the mega flaps. No nosewheel steering - differential braking on the main wheels, a stick rather than the US yoke style and outstanding visibility.
It gets my vote. Have fun.