I think Bushnell has some models in this price range which are good. I have a pair of Bushnell Discoverer 7 x 42's, which I love. I think the 8 x 42'scan be found on the net for $300 ish still.

Leupold and Minox also make a great porro in this range.

BTW, I compared these directly to Nikon's and I thought the Bushnell was much better.