Snow Removal Equipment...NOW We talking....what exactly do you have in mind? You want a rear PTO blower, front blower? Or rather use a blade? I hate to make my reccomendations and its not what you had in mind.
Frontier vs Deere...I've compared a few, and honestly, almost every time I think I'd choose Frontier...
Tiller...Without knowing EVERYTHING as to your justifcation of a Deere tiller, I'd probably suggest a KKII, seems to me from everything I've read they are cheap and bullet proof.