I don't think you can go wrong with either the Amber Aerolite or the Peregrino. Both are 24mm knots and great performers.Chris, which of the PAA brushes was your favourite?
It's a little more than his budget, but a 24mm Synbad can be bought from ApShaveCo for for $25. I've not used one of their brushes, but they seem to be really highly rated.