I dont have the Minore III but the one before.
I got a Marzocco 573525-MU (15 degree angle) group handle and also bought a Gomma rubber handle 700616 to replace the standard one.
I have really become accustomed to the feel and weight of it. When I swap to my other one for whatever reason (usually backflushing), it feels way too light and a bit wrong.
Just have the standard 2 hole tip on mine, but I have used a Minore III and the steam power is definately greater on the newer model.