I have a VT-2 3-12x44 SFIR which I bought from a UK retailer. Nice crisp optics, nice controls (although a little stiff to start with) and an excellent fine half mildot reticle (though it may be too fine for some).
Optics are sharp and clear. It came with flip up covers, sun shade, and mounts. In terms of overall diameter the objective end of the scope is the same as a Nikko Mountmaster 3-9x40 even though it's a 44 objective lens.
One thing some may not like is the entire reticle illuminates not just the central portion though that doesn't bother me.

I'm very happy with mine and would buy another Discovery scope quite happily. I have my eye on a compact 3-12x44 FFP Discovery HD at the moment....