I think you might add the Galvan OB-1 to your list. It has an unbelievably smooth drag. Galvan is my favorite Trout reel. It is only 2 3/4" diameter.
The Ross Evolution is a great reel but I don't like the incoming click. The Lamson Litespeed is another great reel but I don't like the way the spool is held into the frame. It uses a rubber "O" ring to hold the spool in place. It does fit very tight but I don't like the design. That doesn't mean that the design is not good. It is simply personal choice. I don't know anything about the Sage 3100.
You will be happy with the Galvan, Ross or Lampson.
Galvan Open Back Reel
OB-1 (2.75) Diameter
3.9 oz Weight
WF-2-F 50 yd
WF-3-F 30 yd