I've been comparing the Sony KLV26HG2 - which has a contrast ratio of 500:1 - and was all set on buying it. Then I saw the Sharp Aquos LC-26GA3E which has a much better one, 800:1. Is this REALLY important? The Sony has really, really sexy menus and some cool features, but obviously I'm not going to go just for gimmicks. Does contrast ratio affect black level at all?