Don't get involved with the boarding scrum, then. I use Easy/RYR a lot and it's rare for the ac to be completely full. If they give you the best fix of price/time/destination etc then either pay the extra for speedy boarding (but not if all it does is get you on the bus first) or (my preference) sit in the boarding lounge with a coffee and paper until the queue is almost gone and then board. At the end of the day, a seat's a seat and I don't really care where i sit!
DH