[TARTMAN]

eventually, most things need to be upgraded/changed to move with the latest technology.

nicads/lipos

brushed/brushless

27meg/40meg to 2.4ghz.

and PT's will be the same.............

Anyone with the amb will be ok on the newer software, MRT sadly looks like it may not.

as mentioned, there is plenty of time till its needed to upgrade if its needed eventually to move forward then it will have to be done.

I dont think the mrt's will be worthless as many clubs that do not run a national/regional etc will prob stick with the older system for a long time to come.
AMB may offer a trade in with mrt's so watch that space.

I would advise anyone(as been mentioned) if buying a PT now, Only get the Harry/AMB ones. so you can race all over for a while to come.

Its still in its infancy the newer 4 system, so time will tell what clubs do.

Personally i say hold off until absolutely needed on the software upgrade front.