I had some LiteGlow 2x48" and 2x36". Recently I've broken one of the 48" by being a little uncareful. . . and a 36" just 'died' on me. I decided to order an LED kit (not here yet) because it's smaller, doesn't rely on gases, not as easily breakable and you can do cool stuff with them. I decided to put the still working 36" neon under the hood and the 48" in my back glass. I'm the kind of person who builds his own computer with sidewindows and puts cold cathodes in the computer, so lighting up my car was a must. I personally like them, on the right car with the right color, then it'll look nice. It's ricey, yeah, but in my opinion things like having a coffee can on the back of your car make you more ricey than some lights. Some like them, some don't.

On the mounting issue, the front and back ones are easily hidable in the grille and above the rear bumper under the car. The side ones are tricky, I don't have a body kit, or skirts and you can see them slightly if you're at a distance, but I'm sure some coilovers would fix that (But also make them more apt to damage). Just be careful driving, as if you don't already do that but potholes, gravel, road elevation changes, etcetera.