I own a shooting crony and a CED M2.
I like the M2 with the IR screens (works pretty good with the normal screens too). However, if its below about 35F its a crap shoot, so I built me a small insulated box that holds the chrono along with a couple disposable hand warmers and it works fine.
If some is good and more is better, then too much is just right.
My mind is a raging torrent, flooded with rivulets of thought, cascading into a waterfall of creative alternatives