I don't work for any of them but I reckon Buzz is probably the best of the bunch at the moment.
Why? Well we all have an idea of the problems at easyJet and Ryanair. Buzz has its ancestry in Air UK and they were always a good operator. They have just won a battle with KLM and one assumes that they are in strong negotiating position to gain some decent terms and conditions.
Pure conjecture on my part I have to say and I hope all goes well with your job hunt.