To be honest, Pony Poindexter has never been a favorite of mine. One I do like is Pony’s Express mainly because it has many other saxophone players I like, and the arrangements are good.
When I think of the alto sax players I like, Pony comes far far down the list. I sense a certain shrillness to his sound, and I don’t find his solos to be interesting, though there are likely a few exceptions.
My comments are not in line with what others here have said, but it is just my personal opinion.