A point I would consider of note is that it has long been known that a small degree of choke (e.g. the UK improved cylinder) gives a much more consistent pattern than true cylinder (as well as a slightly denser pattern) and is also thought to be more consistent across different cartridges.

I am a rather average shot (as said above, many game shots such as myself are not very good by overall standards!) and I find that improved cylinder or quarter choke in the right barrel and quarter or half in the left barrel (which is a pretty common combination in a UK sporting gun) suits me just fine.