Time and Tide, the Australian watch website, were excited about the Longines Legend Diver when it launched. They look good in the metal, and I'd agree with
@Chris that they're probably on a par with Oris.
Mechanically they use an ETA movement, which has been tweaked using a silicon hairspring. The Oris uses a fairly stock Selita, so the Longines is probably ahead on that front.
I'd also cross shop with the new
Oris Carl Brashear, which has their new in-house movement. But it's about 30% more expensive than the Longines.

Bell & Ross have just launched their
diver in bronze with a red dial, which looks really nice, but is a similar price to the Oris.
