Arran's wonderful in every way I reckon! Especially megalithically!!!
Machrie Moor's the mummy & daddy, but there's tons of great stuff to see. At the time I visited, I didn't used to post stuff on here unless nobody had been there before.
Then by the time I added my photos (wish the weather'd been better & I had a better scanner!) I couldn't remember all the details well enough to write fieldnotes. I'd end up just regurgitating Burl with a few superlatives thrown in. (Actually, that'd probly be an improvement on my usual style....)
Have fun - you're infer a treat!
love
Moth