Best Kobe Beef restaurant?

I have been looking for a good kobe beef restaurant online, I would like to try it during our trip to Japan in May. I am having a hard time since most of the restuarants' websites are Japanese only.

So.. what is a good restaurant to go to in Kobe (or Osaka/Kyoto area) for kobe beef? And, preferrably, a restaurant where we don't have to get dressed up because we will of course be living out of a suit case. Given the price of kobe beef though, I am afraid that any restuant that sells it would require us to dress up.

Check this site if you haven't.

Gourmet Navigator :
http://www.gnavi.co.jp/en/
Bento. COM :
http://www.bento.com/kansai/index.html

-------preferrably, a restaurant where we don't have to get dressed up because we will of course be living out of a suit case. ---------

We always eat at Hotel Okura restaurants for Kobe beef.
One is Sazanka teppanyaki place, the
other is Emerald (french restaurant)
The reason for our trust in Okura is because they sell kobe beef just entry way before you go into Cameria restaurant(regular restaurant/cafe).
You can go both places in smart casual.
We've had Kobe beef in Kyoto off street (gion) near the theater but it wasn't like what we had or what we bought before.
Someone here have mention other places in Kobe, one is on island (buffet style) and other inside Kobe airport (sandwich place).