What AH books are the best to read?

I’ve only read the Years of Rice and Salt so far and I really enjoyed it. Hit me with all your suggestions!
(I do prefer stories more in the immediate rather the far-out past; and I’m not really interested in WW2, but that’s about all my preferences)
 
The first half of Harry Turtledove’s Southern Victory (TL-191) series is pretty decent as is his Guns of the South novel for the ridiculous premise alone.
 
Have a look at the suggestions in these previous threads:
There might be something there which appeals to you.
 
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