RE: Do you prefer an adjustable objective or not?
I have not seen any true " long range " scopes without it. Although I set mine and leave them , as most of my shots are 200 yards and under, for long range 300 + yards, it is a necessary evil. I say that, because although as stated above it is just something else to have to mess with, it is necessary for long shots to get a true sight picture when using magnifications in the 14 - 20 range.
I don't think you would find a long range without it, but if you did I would still shy away from those scopes and get the adj. obj. scope for what you are wanting to do.
God Bless