Absolutely agree with Jason.
Even here in my dark skies I have used my 6mm twice in the years I have had it. Both times for about 1 minute. Waste of time.
I also have a Very expensive Pentax XW7 which I have only had the opportunity to use about 5 times in 5 years. The seeing needs to be excellent and that is rare.
But my 9mm is quite happy to give pretty good views, so that is as far as I push it.
All this in a GS12" Dob
