I couldn't disagree more on the QPP bars. Yes, there are some pathetic ones, but there are some real gems, too.
Here's the key: do not even think of showing up there before 11 pm. After that, and for some bars, continuing on until 7 am, the place is hopping, the bars are full, the girls are friendly (and in general, not too drink-pushy), and there's a great selection.
In my opinion, over the past few years, the place has just gotten better and better. I think right now it's the real hidden gem among the BKK bar areas.
Warning: the girls who work in the bars there--the ones worth taking home, anyway--fit a certain pattern. They tend to:
-all live not too far down soi 22
-come to work late (10 pm, 11 pm is not uncommon)
-drink a LOT (and for the most part, they can handle it)
-not want to go and fuck until maybe 3 am, or later
In other words, if you're a lightweight in the booze dept., or if you're an earlybird, QPP is probably not for you.