If you're only going to do one, do the super pastel. While I think a butter/spider/pastel BP is a bit cooler than a killerbee, the killerbees are still FANTASTIC and you have a 1/4 chance per egg for a killerbee rather than a pretty pitiful 1/8 chance per egg for a butter/spider/pastel.
If it were me, I'd throw the super pastel in, and use the butter as a backup if I didn't see plenty of locks.