Rob,
I also had the blue etronix set and had 8 months trouble free , then it started playing up at calidcot and put my losi into the wall at the end of a straight
luckily it's a strong car!!
I got a Futaba 3GR 2.4 and its been 100% solid and the car responds quicker i'd recommend it for the sub £150 price bracket
cheers
dave