I agree with Janner, the Cressi Matrix is a nice mask - comfortable with a good field of view, although Cressi gear is often pricey & it is a twin lens mask.
I have a very nice
Visualator style SCUBA mask, which has an excellent field of vision (mine is all clear). However, I cannot imagine going back to it having used spearo masks (like the Omer Alien & Seasub Combat X-Low). I briefly tried it again last Summer: it's great at the surface but not for diving - and I don't dive deep.
Tusa Visualator mask - Only £40.00 - Scuba Dive Shop
If you really can't face using any of the spearo masks (e.g. Omer's vast range), you could try the
Beaver Atomic. I know somebody that has one and I was surprised how good it is -- it feels as close fitting as a spearo mask but w/o the nose bridge. Definitely worth checking out & your local SCUBA store might carry it. Actually, if you are interested, he might even sell it, I don't think its been used much, if at all (his life priorities changed
).
Beaver Masks