Always 'best wishes'. T1 was always 'kind regards'. I find it all pretty meaningless to be honest.

As I posted in Dear T the other day: "What are 'best wishes', anyway? Are they really the best of wishes? If they are, does that mean they're better than the last wishes you sent me, which at that time were the best, and you're beating your own record every time? The wishes must be really bloody good by now. It must be exhausting for you."