I agree with Mark Pearce that Sean's tours are the gold standard as, obviously, are Ran's. Alas, we are not all such good analysts, blessed with the ability to play, analyse and remember, all at once! But that does not render all other photo- tours worthless. For myself, I bias a bit more to atmospherics and aesthetics when I take pictures than to the purer GCA route which Sean takes. I think this approach also has some value.
I think where I agree with Mark B is not that they are too many tours, but that too many of them are dull because they are poorly edited with too many pictures - which maybe amounts to the same thing!. Less is definitely more. The worst are those with drive/approach/green, hole after hole. I think 25 pics max per thread would be a good rule. A couple of courses deserve the full treatment, but most do not.