Hi JA
Thanks. I actually already have an AZ-GTI

Well... maybe that's not true, it's my son's but he uses it for visual use now.
Guiding etc is not in the equation as this isn't for deep space, more for Milky Way nightshots.
That's a nice size as well. I've been looking at smaller options and since I really will just be using wide angle lenses, maybe something like the iOptron Sky Tracker Pro?