I there!
I’m a huge fan from WGS speakers. 
Since a few years, I tried different combinations which didn’t really satisfy me. The only one and not constant: I love my Reaper HP.
In summary (my amp is a Blackface circuit, 20w):
Reaper HP + ET65 : a little bit strange, I found the ET65 too hollow
Reaper HP + Retro30 : not enough bottom, a bit sterile
Reaper HP + ET90 : too much low-mids. I don’t like the way they interact
I search something nice balanced : beautiful cleans, with dynamic but solid dirty sounds (distortions, wild fuzzes). Something full but not vulgare, wich receives well all sort of pedals.
I play classic Rock, Hard Rock Fusion, Garage (from Pink Floyd to RATM, Hendrix, Jack White, etc.)
Well… Reaper 30w is an option. A second Reaper HP as well…
Why not a Blackhawk???
I really don’t know alnico magnets. How do they react in high-gain? I don’t like scooped mids or too much harshness with distortion.
What do you think?
Thanks a lot!
Cheers from France