If you like the New Holland, and you have an LS dealer close, check out the LS XR4140. It's the equivalent to the Boomer 40, and you can get the same options for less money, or more options/implements for the same money.
But, of the three you presented, I like the New Holland. I know they're about the same about charging for their color/label as Deere, but I don't like the plastic, loader attachment system, and other proprietary junk on the Deere. No experience with the newer Case stuff, but there's a few threads around here talking about long wait times on parts, especially during farming season when the guys on $750k machines need help vs you and your $30k machine.
Not sure where you're located, but if you have an LS, kioti, or TYM dealer around, I'd check them out. Lots of folks on the forums for those brands that are extremely pleased with these brands, myself included. I have an LS G3038, the equivalent to a New Holland Workmaster 40.