If you fancy learning in a C42, go to a good microlight school such as Airborne at Popham, who use the type. But most of those won't use the BRS either.
A bit off topic, but some C42 microlights are now being fitted with parachutes to take advantage of the increase in MTOW. The allowance is 22.5kg and fitting the approved Galaxy system means there is about 11kgs available for additional fuel or crew weight.
Ironically, many think they are being fitted for safety reasons.