Luxray - No. Even Electivire > Luxray
Cottonee - imo Jumpluff > Cottonee, and I don't have Jumpluff on the priority list. Cottonee to me just seems too gimmicky, and while I don't doubt it can be effective, I haven't seen one used to success thus far. So, I'll hold off on it. Also Celebi happens to completely wreck Cottonee.