Congrats on the Kubota purchase. You will not be dissapointed. Just remember READ THE INSTRUCTION MANUAL please. Over the years the only real failures I have seen with these tough tough little tractors have been abuse related.
Apparently, there's no shortage of good, quality tractors. Although, I didn't see many folks suggest the red brands, I've owned a Massey Ferguson 230 since 1977 and have been extremely pleased with it. Nothing more than routine maintenance and a few very minor problems with it in 33 years. In my part of the world, though, Case IH seems to be the brand of choice. I've never owned one but I know a lot of farmers that do and they swear by them.