I'll never leave Dames alone :-) His style and content bugs the hell out of me. Ironically the one he wrote on Ireland is his most coherent, but still full of gaping holes.
Books like the Avebury Cycle should be in the Humour section in bookstores!
I'm not aware of Dames' work, but I liked TomBo's assertions.
There are so many BARKING MAD CRANKS (witness Garry Denke) who write about this stuff, that one has to pick and choose with care. I guess this is why we admire Julian so much - he balances 'the facts' with 'the feeling' and draws his own conclusions.