In reply to lnn:
I've done the Pyreneen C2C as a supported tour (someone else carried the bags) and also done some cycle touring there fully loaded.
Supported was more fun! Doing the Col du Tourmalet on a loaded touring bike was challenging to say the least.
The area is great for touring as long as you don't mind challenging climbs, generally speaking the hills are steeper on the east side, avoiding them requires long detours north and kind of misses the point IMO.
The road surface can be quite rough with large, loose gravel on some surfaces, we saw a nasty accident where a motorcyclist came off and scraped his foot down to the bone. For us it led to some discomfort in the hands on long descents (they're all long descents!)
The campsites we stayed in were nice and there is a cyclists B&B at the bottom of the hill between CdT and Col D'Aspen but you might have to book.
Can't comment on the coach as we went down by train the first time and flew the second.
SteveD