hi Red17
I've ridden with all 3 clubs you mention and this is what I found (with scores out of 10):
Penge cc: 5/10. Friendly but a general lack of organisation means you don't really know until the morning (Sunday) depending who turns up what choice of rides they'll be, but they're always pretty limited. Some weeks the 'fast' ride will only be 16 mph, another week around 19 (as I found to my cost - wasn't told beforehand it would be so quick)
Bigfoot cc: 2/10. Very disappointing. There are 7 groups for their weekly (Saturday morning) club runs, varying from 12 mph up to a training group of 20+mph so, on paper, a pretty good choice. Unfortunately this is not a friendly club. Things are pretty good in the 3 lowest groups, but I found those in the higher groups, and particularly many of those in level 3 who had moved up through the ranks from the lower levels, to be a very self important and unwelcoming lot. A club to be avoided in my opinion.
Addiscombe cc. 9/10. Excellent. A great choice of about 10 different rides on their Sat morning club run from Coulsdon South station to Tanhouse farm in Newdigate, taking various routes there and back, from 15mph up to a fast training group of 21+mph, Very friendly and well organised by club Captain John. There's also a regular Brighton and back ride during the summer months. The best club I've ridden with.
I've also ridden with Avanti, Beckenham Rugby, Old Portlians, Brixton and Catford.
Avanti (8/10) is the pick of these. They meet at Green Street Green (possibly too far for you) and have a choice of 4 well organized Sunday Club runs (their flagship Aylesford Priory ride is outstanding).
Brixton (7/10) is also worthy of mention. They meet at Crystal Palace Parade on Sunday mornings. When I rode with them it was to Box Hill and back. Limited choice of rides though.
So, for me, it's first choice Addiscombe, with Avanti a worthy contender, and Brixton as a third option.
http://www.addiscombe.org/
http://www.gsavanti.co.uk/