D85 - Artillery set-up optional on or off?

[Elxaime]

I have usually played D85 games with the artillery-set up optional rule "off" although almost always I have it "on" for WW2-era games.

I recall some discussion way back about modern artillery capabilities making it more realistic to have the optional rule "off" but then I got to wondering as to what players out there playing D85 actually are doing.

So two questions:

1. Are people playing with artillery set-up on or off for Modern Campaigns games and especially if playing D85?

2. And is there a consensus as to whether one or the other is more realistic?