I did like most of the handheld Sonics, but then those are done more in the Genesis style. And I did like Generations and Mania, which again, have that Genesis style.
But I can honestly say that I'm not a fan of the 3D Sonics. Not even Sonic Adventure.
But that's not to say I'm against modern gaming. I do own a XBox One, 3DS, and Wii U.