Personally for a blowback 9mm AR I'd still get something with a lip to keep gas out of your face.
For cheap, I'd say the Strike Industries handle, has a nice lip for blocking gas, and for a few bucks more it's available in an extended latch, or in red if black isn't your thing. I've got one on my RRA 9mm AR.
I've got the Raptor on a DI AR and while it's a great handle there's no lip at all for gas. If you're looking to spend that much money on a handle the Geissele Super handle is just as nice and has a lip. I like the Geissele a little better than the Raptor.
I don't read much about the Armageddon but I like the design, good gas management and a simple ambi design. They also brag that since the mechanism is enclosed it's a little more resistant to dirt jamming things up. If I see one of these on sale I'll try it on my uppers.