I expect I have played >90% of my golf on Doak 3-5 range courses; and perhaps 1/2 of that was on Doak 3 courses. I would not have traveled far to play those courses, but I love playing the average courses in my hometowns.
I get just as much fun trying to stay in a ho-hum fairway, trying to avoid another boring tree-line, trying to stay out of mediocre bunkering, and trying to make a decent putting stroke on an unimaginative green.
I have only encountered a few courses, that even if the price is right, the conditioning is decent, and the pace of play is good, that I still will rather skip playing golf rather than play that specific course. (Riverside in St. Louis)
I think that the Doak 3 course is going to test & challenge me, more than any Doak 10 will test & challenge any PGA Tour player.
My brother & I frequently play a 9-hole muni in St Louis (Ruth Park), that can not be any better than a Doak 3. And I look forward to playing it again & again.
In Springfield Ma, most of my rounds were at Franconia, a muni designed by Van Kleek & Stiles with later work by Cornish. It could not be much more than a Doak 3.
Here in Cincinnati, I play in a weekly league at The Mill course. This too is a muni, re-designed by Hurdzan. This course is definitely a Doak 3.
But all of these are fun for me and enjoyable. I have played St. Louis Country Club, and Cog Hill #4, and Longmeadow CC, and George Wight, and Crooked Stick, and Highland Links on The Cape, and The New Course in St. Andrews. And I would gladly play any one of those as often as I could. But I also have financial, time and logistical limitations in my life (& did I mention financial limitations); and manage to still love playing golf at my simple little munis.