I second the opinion that you should include ADS in your list. The ADS L-710s, 810s, and 910s were fantastically good speakers and will hold their own even today.
And, it's your lucky day - there are a pair of 710s and 810s on A'gon right now. The 810s are ridiculously low-priced and the 710s look to be in superb condition, albeit more expensive than the 810s. Me, I'd buy the 710s - they are some of the nicest speakers I've ever heard.
If you have the money, I'd suggest buying them both and then keep the ones you like best...
-RW-