I read the beginning of your other thread on the theft of your bike so I hope you have that sorted for your new bike. (I never read the conclusion, if there was one).
Cost and efficiency wise, any of the Shimano Alfine's would work. I know you say you want more range and I wonder if your front chainring was a little large and you could go with a lower tooth count to help with bottom end but lose what you probably don't use on the top end, especially on a city bike. The Rholoff is a proven well built system. You certainly can't go wrong there.
My favorite is certainly the Pinion, at least in theory. Having the weight in the middle of the bike makes so much sense to me. It would seem like a better balanced bike front to back. For custom Ahearne bikes
makes use of the Pinion.
https://www.ahearnecycles.com/shop-b...s-mixte-pinion
Good luck with whatever you chose. It sucks to lose a bike, but there is a joy in getting a new one. .
