I have seen 891 several times in my (now sold) LB 12" from suburban skies (meh....) and through my 10" Sumerian Optics under a 21.75 avg sky in Germany (wow!)
One of the best edge-ons, or easiest anyway, showcase galaxies. But not easy to see! I have tried to show it to several onlookers but they simply could not see the galaxy. After some hits on where to look they managed though.
Thanks for the other suggestions, I will definately have a go at them sometime!