I looked at and drove them both. Both are fine tractors, and both should satisfy your needs. Both are made in Japan. Both were a little small for me. /w3tcompact/icons/frown.gif I suspect the NH has a stronger FEL, but I'm not sure, so I won't give NH an advantage there. The only real advantage that I know of is the MMM. The NH offers a 60" rear discharge MMM deck made of 7 gauge steel; the Kubota's is 9.5 gauge and weighs about 100lbs less. If you go for a rear mount mower, it's a draw. Pick the dealer you like the best, unless of course they are both sold by the same dealer.
If you have the room, consider the next size larger NH. I saw a TC33D & a TC24D side-by-side, and the $2500 price difference seemed insignificant.