I'm a refractor guy, Dave. 6" is big and 8" is colossal.
I agree that Burnham's needs to be read very critically now when it comes to astrophysics, and the positional data are slightly off, although more than close enough to find the object in an atlas and/or finderscope. What puts Burnham's in a class of its own is the historical overview - who discovered the object, comments of observers over the years, and artistic and cultural significance. It's beautifully written, and I often use it to observe vicariously on cloudy nights. (I live in Seattle. We get a few of those.) If I could only keep one astronomy book, Burnham's would be it.