I have owned and hunted most above; have chosen ESS (Springer) as my go to favored dog for upland hunting (phez, grouse, woodcock, etc.) Good bird finders and just like FBI on downed birds...they never give up. As for guns, if I had to choose one I might quit shooting. My "rotation" includes Super 20, Citori 16 SLF, M21 20, RBL 28, 16 and Parker Repro 20, 16 & 28.

A Springer Spaniel, a 6# double and a fair day to hunt.