From Bucharest WizzAir has a lot of popular destinations and I like them better then other low cost Airlines. Mostly on time, although this one not, but was due to some security risk coming from Spain. I fly about 20-30 times a year and my experiences with WizzAir are good to very good. Mostly very friendly personal and I try to fly with just hand luggage as much as possible. Little tip for to enjoy WizzAir more; book extra's like priority boarding and front row seats. Makes your flight a lot more comfortable.
Happy traveling :-)