I've just done 'ToursNMan'

http://www.toursnman.com

French full distance race.
Loire Valley.
River swim
Fast bike with good roads and well policed. Pretty much closed roads
Looped run passing lots of supporters.
Half distance and relay if you want
About €250 for entry. (can't remember exactly)
Great atmosphere, 'ironman esq' without the branding.

And free post race massage without a queue.