I have the original electric 4tec, most of it anyways. I believe I cannibalized some parts for my Nitro 4tec. Also have a Nitro Rustler, E-Revo, and another electric car I can't remember the name of that has a Brushless setup. I'd say they're all collecting dust, but they're packed away somewhere.
Still fun to pull out from time to time, but not worth getting one unless you have a local club that does races like lsiunsuex said.
I have 2 nitro tmaxx, a nitro sport (2wd buggy) and a 4tec with an Orange 69 Dodge charger body. Almost bought a Nitro 4tec, but then the city "re-paved" my street by chip sealing it. My new house is all nice and smooth again, so I might have to.