Guys, either Wizz or SLX it depends on your overall results, skills (especially soft ones), previous competences/experiences, commitment and flexibility.
The 2 companies have quite different business needs, values, mission and scope of work....thus quite a different needs in terms of FO's and future Captains (...do not forget you are screened as future Captain..).
One might pay more attention to age whilst the other more on previous experiences/soft skills to match their operational needs...that said if BAA is yet to provide you with a feedback is simply because they also do not know what the airlines have decided.
Good luck to all, and hope to see you here soon.