There are actually now a couuple of different types. I still prefer the original Cabernet Syrah. Mrs JP Chenet has been known to be partial to their Chardonnay too when we've ben camping or at Disneyland Paris.
The main reason we drink it at Le Mans is that it's reasonable but as you have already stated, it's cheap (we prefer to say "value for money", don't like saying that we buy cheap things
) The novelty factor with the bent neck makes it a bit different too, and it was because if this that our group in 2001 decided to call ourselves The Winebenders. We approached the UK distributors and asked them for some promo stuff but they didn't come up with anything.
I think it's like many "holiday" experiences too. It always tastes better on a campsite in Le Mans that it does at home. I tend to prefer heavier, fuller bodied wines normally, but with a BBQ in the sun it's not a bad drop!!
If your looking to impress your friends RS2 then I'd maybe get something a little better recognised, but it's worth grabbing a bottle the next time you are at Champion to try with a BBQ.
Enjoy!!