4.1 pro's

* great steering

* rear end planted

* good parts prices

* Better bang for your buck out of box

B4.1 cons

* CHEAP parts quality

* screws back out even when thread lock used (lost tranny screws first time out)

* everything got sloppy after a couple of battery packs



22 pro's

* VERY durable

* drive train quiet

* parts last forever

22 cons

* rear end steps out if traction isn't sedan like

* expensive parts

* stock screws are TERRIBLE

* lacking on what you get out of box compared to the B4.1