I don't deny the possibility that there is a better one, and I don't suggest that this forum will supply 100% of the help everybody needs. But I have spent a long time looking for better resources and have yet to find one which I consider better.
I used to spend a lot of time on Usenet, especially in the early '90s, and there are some good resources there too. However groups like (for instance) sci.electronics.*, while helpful, suffer from the presence of people like Phil Allison. Phil knows (or appears to know) his electronics, but his personality could curdle water. Anyone who finds audioguru* a little abrasive should spend some time on s.e.b. and see how long it takes before audioguru seems like a friendly fluffy bunny.
[*- Not singling you out for anything here Duck; it just seems you've been getting some flak recently.]
There are more directed forums, which may be more useful for specific interest areas, products, or levels of expertise, but for general electronics knowledge, if there is a better site than electro-tech, please let us in on the secret!
Torben