There aren't that many JCV LCD owners here. In fact, this the first time I have read of anyone considering a JVC as an LCD.
You went to the shop to get a Samsung and somehow ended up with a JVC. You obviously felt (or convinced) that the JVC was a better LCD than the Samsung for you to buy it. Forget the contrast ratios. If you are happy with the picture quality, that's all that matters. After sales, of course, is a different story.
Me, I'm happy with my 37" Samsung.