Thanks feenix - yes, agree it's a good reader so far, all things considered (although I've only had it a couple of days). Very much as I expected - almost identical to the Touch, but with a light.
I also found the Touch pretty trouble-free, but not so good for reading in dim lighting, so - problem solved! Like almost everyone else, I could do with a lowest brightness setting that was lower still.
Copied all my books to the Glo using ADE. The only thing about that is losing all the database info about which books have been read and which haven't (on non-kepubs). Another mild annoyance. Waiting to hear back from Kobo "Tier 2" tech support regarding whether this is really beyond the wit of wo/man to accomplish.