A spoiler is a dealer option, not a factory one, so you can put it on any model Accord you want.

The EX has standard options like leather, climate control, a better stereo, standard ABS, Rear Disk brakes, and more power There are also cosmetic differences like moonroof, allow rims vs hubcaps, body color moldings etc. This is all comparing the 4 cylinder models. The LX & EX V-6's both share teh same engine, ABS & front and rear disk brakes. The other differences are as I mentioned.