Mylap's was smart from a business position. Cant fault them for that, Give the track owners an unbeatable deal on the upgrade to their system and them make all your money on racers having to upgrade transponders.
That being said as the guy having to shell out $350 in new transponders, I'm not happy about it.
There is a growing number of racers in my area that are planning a boycott of tracks & hobby shops that do the upgrade. Limits racing choices but trying to control costs.