I had the early TMaxx .15 in 2004. I couldn't tell you how many gallons went through it, both in the .15 and later the 2.5. It ran endless laps at the local track almost daily and was intensely reliable.
Tuned correctly and properly maintained they will serve you very well.
Totally stock at the time this picture was taken. Wheels, tires and the 2.5 were the only upgrades. The .15 was still running strong.