What's the best HDMI cable that you have tried ?

Best I've used is Supra, right here on Audiogon.

If you replace the stock cords on your video gear (HDTV's too) with better cables, you will see the differences with HDMI cables more....

The very best power cable I have ever used with video gear is diy CryoMax 3 cable from cryo-parts with Oyaide p/c 004 ac connectors...

I tried some diy dh labs power plus power cables on my pioneer plasma and video gear and liked it better than my CryoMax 3 power cable with Oyaide p/c-004 connectors!.. I found a review on the dh labs power cables and the reviewer replaced his high priced power cables with dh labs for video too... http://www.enjoythemusic.com/magazine/viewpoint/0803/aachapter47.htm

Most of the PC plugs are too big to fit the Panasonic plasma TVs that we use. I finally found a cheaper Oyaide cable that fit and it improved the picture.