I thought I posted this, but apparently not...
The internal MM stage as is good as any I've heard for the same price, and more. IMO it takes the Dyanvector P75 mkII to better it. That's $780 last I checked. Add about $150 or so for a good set of interconnects if you need those too.
The P75 is very flexible. It'll handle pretty much any cartridge out there. They sell for decent prices on Audiogon, but there's usually about 2 or 3 listed at a time.
It's heresy around here, but the Simaudio LP3 is a great phono stage too. I think it's about $550, plus cables. A little different than Bryston's internal MM, it's the definitive external phono stage at that price IMO. I'd take Bryston's internal MM over it, but it's more flexible with carts.