I had lines at Mesa...I have PBS now at Shuttle America. Granted I am top 10% in base now...but I MUCH prefer PBS. Even when I was more junior, I got a lot of little victories with PBS. Even if I couldn't get everything I wanted, I would end up getting something I wanted....ORF overnights to see the folks, day trips, etc.
Now that I am senior it is awesome...get the days off I want...Next month I only have one overnight (14 day trips and one 2 day trip).
PBS does take a little getting used to...there are a few neuances that will get you if you don't know what you are doing. After about 3 or 4 months of messing up your bid, you get the hand of it.