Not long ago I bought a Brother laser printer. It supports AirPrint and it's by far the best printer I've ever owned. Model number was HL-3140CW. They probably don't make that particular model anymore, but Brother is a really good printer brand.
I will never buy an inkjet again. I've had several in my life, and they always have the same issue: you spend a fortune on cartridges and eventually they either dry out from not being used enough, or they leak all over the inside of the printer and ruin it. I refuse to buy one again, especially if it's HP or Epson. The laser printers don't try out because the toner is dry powder. We've had our laser jet for about 2 years now, and I JUST changed the original black toner it came with about a week ago.
PS: I have used it with iPad, iPhone, and Mac and it works great with AirPrint with all those devices.