Where a number forums and car clubs exist for the same car its always difficult to say which is better than the other, some will offer different things to the point you say should I join them all?
Well yes I suppose to get the best of all worlds you need to, but it works out expensive if membership of each club is involved.
Its a great pity all cant get together all under one roof to offer one fantastic forum or club, but it wont happen.
Another club often starts up because a long standing member of the other has had a fall out and decided to start their own up.
Take for instance something like the Ford owners clubs, theres up to around 5 that cater for one model, ridiculous, and each one thinks they offer the best.
The original club, the first to start up normally offers the best in terms of info and knowledge, but often its up to you to decide, do I join all at whatever expense or pick one and risk missing out on things, its a difficult one.