Hello Reggie,
I ran a 60Ah BEV i3 as my company car for 2 years, covered about 30k in that time.
Fantastic car, really loved it, the regen brakes take some getting used to, but once you have, you find yourself driving everywhere hardly using the brake pedal.
I have a 70 mile daily total commute and found that I was able to fully charge the car at work - this gave me enough battery to get home and back the next day - zero fuel costs (apart from a little electricity at work). If you run in Eco Pro plus mode (where the air conditioning and speed are limited) it was possible to extend the range to circa 90 miles in the summer/75 in the winter.
I did not notice a significant change in range over time.
My only criticism of the car is that it is a little too small for a family of four, and the rear doors can be a bit frustrating if you want to let someone in or out, you have to open the front door first.
Servicing costs were minimal, build quality was excellent.
Overall, I really enjoyed the car, really enjoyed talking to people about it (everyone was curious).
Haven't tried the 94Ah car, or the new i3s, but am sure that I will buy another in the future. The whole experience sold me on the benefits of elec/hybrid vehicles, changed the i3 for a 330e, which has just been changed for a panamera hybrid (would have preferred the i8 but I couldn't fit everyone in).
If you want to discuss it in more detail, PM me your tel no. I will call you
Hope this helps
Regards
Andrew