Only thing I got this year (other than the puppies we got as a family) is an amplifier I picked out myself. That and its install will be plenty. I've slowly been adding to the car stereo, since they didn't have the limited edition version, of the Elantra, that I wanted. Last thing after changing the speakers and adding a sub was the amp. It's got a learning function similar to what the surround sound receivers do in that it listens through a mic to figure out the acoustics of the car. It then takes that info, adds what EQ is needed and sets the time delay on the speakers to make everything sound the best. Pretty cool.
Kicker 47KEY200.4
Kicker 47KEY200.4