Your galaxy observations never cease to impress me Paddy. You've got a real knack for pulling in the details! I *almost* saw the dust lane in NGC 5746 the other night, but LP overpowered it ofcourse. It's presence could be seen as a "hard" edge to the eastern side of the galaxy. The galaxy itself is excellent.
Looking at Wikisky, NGC 5921 looks pretty impressive, and your description is encouraging
Try going for NGC 6221 and 6215 next time your out, I'm eager to see what you see here. So far, these are the only galaxies I actually resolved spiral structure in, bar M83.
I was going to try for Serfets Sexytet the other night, but decided against it as it would require high power due to its tiny size but seeing was very bad which not only limit mag, but also washes out these faint tiny things.
Btw, Sat night was clear for the whole 9 yards
cheers