I've been a proclip person since I recently got my new car and I can tell you the cost is worth the quality. They spend time and effort to get car mounts that won't damage your car and require no screws to install. Once the mount is in the car you can change holders over and over again as you change phone models so the universal mount system is ideal. I recently got an iPhone 5 and was able to temporarily modify my old iPhone 4S dock until the new iPhone 5 one came out. I can say the solution with the lighting cable is ideal and elegant. Personally I've become a life long proclip person since using them now.
iPhone 30-pin adapter filed down to work with 5S in case
I'm not convinced attached version won't work. All that is needed is an adhesive that will bind plastic, copper, and soldering material to form a thin, durable layer less than 1mm thick.
Check out Tetrax.
Magnetic mounts that mount almost anywhere in your car.
You get two magnets so you can move the mount from car to car.
You get multiple mounting discs for your phone or phone case so when you get a new phone or case you just install a new disc.
And replacement magnets and discs are sold separately so you don't need to buy a whole new mount if you want to change cars or phones.
They've also got a model that clips onto your air vents but I don't care for that one -- too unstable.