I mean, personally, the tuff golem was my 3rd choice of the 3. Although the copper golem was my top pick last vote.
Personally, I went for the sniffer because I'd really like some more new plants. I went for copper golem last time because it could've made for decorations, like the new plants. I am mostly a builder afterall.
My main issue with the tuff golems is that I would like to control weather or not the move, but I don't recall anything about that being said for the TG. The said the CG would freeze when it corrodes, that that was why I went with that.