One of the best fights I ever had was at 25K+ in a P-38 vs. 2 P-51D's I was flying solo, they were winging, and even though I lost, it was a good dogfight.
I just started flying again after taking about a 3 year break from the game. I find about the only way to get a decent dogfight these days is to fly around between 15 and 20k and look for that loner circling a furball. I usually end up losing because, well, I still suck, but hey, at least it's fun.
The reality of this game is you're not going to find realistic WW2 fights except in a scenario. If that's what you want, fly the special events, that's what I used to live for. After all is said and done, you can't really complain too much about the MA... it is what it is, and it won't change.
Regards,