best input device

I remember typing with something like this once, some years ago.
http://www.ergocanada.com/products/keyboards/separated_keyboards/kinesis/freestyle/images/freestyle-incline_600x392.jpg

Just played with it for a few minutes, and it was weird....

anyway, what's the best input method you've used for coding?

inb4, MY ANUS

>>17
Actually, ECs that share flash with the BIOS exist, and they are the worst since there is usually no way of on-line reflashing without crashing the EC, so you have to physically remove the chip every fucking time.