Well, this may be semantics, but I did say "good to visit", not "well-preserved"...
I've been lucky enough to visit a few battlefields in the UK (Culloden, Stirling Bridge, Bannockburn, and Killicrankie, all in Scotland), and Culloden is indeed the best of the 4 in terms of preservation and interpretation!
But, of course, none of that changes your splendid game and report...