I think my advert will end up being more hopeful than anything else as I see quite a few people are also looking for XL's. I'm not sure what the situation is with Rick Mass' controllers, would I need to have one to upgrade or does he have a supply?

Also, I've noticed you can get a decent discount if you order them in quantities of 2 or more from Robot Power Online if anyone else is looking for any that could be an option. I think they work out at about £63 each?

http://www.robotpower.com/catalog/