Your right. Opinions are like @$$holes. Everyone has one and they all stink.
I like a heavy for caliber bullet. They pack more energy further and do less meat damage. (Less velocity, less bullet deformation, smaller wound cavity. Look it up.)
Blacktail deer are pretty tiny, and tend to live in pretty thick country, so I'd load something pretty mild. I usually default to Nosler Partitions when in doubt, although they aren't as accurate (1.5 MOA vs .5 MOA) and go for 2400-2500 fps.