Best iOS ad blocker?

As a new development, obviously there are lots out there. Any thoughts on which I should consider? Apparently, one popular one has announced that providers can pay a fee to get through, so I’m not going to use that one, but opinions are appreciated.

Before you pay for one, you might want to try a free one (no in-app purchases either) like Admop or Adblock Fast. I haven’t used them, so I can’t tell you if they are any good, but seeing as how there have already been two kerfuffles over the previous two top sellers, it probably couldn’t hurt to start out with the completely free ones.

I’m giving a couple a try, and they both seem to work fairly well.

The first one I grabbed, Crystal, works well, but seems to have stirred up some controversy.

The other I’m using (not at the same time) is 1Blocker.