Pleasant and unpatronising
I know the non-league scene well in the area and Croydon Athletic are probably the better bet, you certainly don't want to go to Croydon FC and Whyteleafe, while pleasant enough, is a few miles down the road.
I suppose you could think about a tram ride to Carshalton or Tooting and Mitcham, or even AFC Wimbledon. Sutton isn't far away, etc, etc, etc. Locally, the above is the better option, especially as they have a very decent clubhouse and a community.