jusme
Challenge Tour Pro
I tend to in all but proper comps(all year round), play with cheap and nasty balls, Dunlop, donnay, slazengers, top flites etc. As I have posted before I am amazed how I cant tell the difference either in distance or feel or stopping. Makes losing balls easier!!
In winter the balls tend to stop instantly anyway with irons under 7 iron.
I guess if there is no difference in performance than any ball will do. It surprises me, given your handicap that you appear to get no difference. I could not use my winter ball in summer as it just runs too far on greens. I can definitely see a difference in distance of tees/irons also. Hitting 20/30 balls of some tees on quiet courses (experimenting with balls) and excluding poor strikes the distance balls are consistently grouped approx 10 yards, sometimes more ahead. I tend to only play one or two different balls at any given time as I would fear the unknown performance from an unknown ball would instill doubt standing over it.