How long is a piece of string? You don't really expect a rational answer here Greg do you?
Isn't that a budget related question?
My take on it.
If you had the money you could buy the technical best, but you would want to put it in the best conditions otherwise it is just a trinket really. It would never perform at its best in sub standard conditions and a lesser scope in better conditions might just perform better.
There are plenty of scopes I would love to own, but non would be considered the best for one reason or another. The same as there is not one screw driver that will drive all screws; there is not one scope that can do all the imaging that can be done.
So the best scope does not exist in my opinion. It is a technical myth. Something to dream about.
BTW a 4" scope would not qualify as the best scope under my criteria and many others I'll warrant. It might be a good work horse if it got worked.
