i need sifu guidance

1)which 1 of this 2 HU is better in quality of sound?

2)the market price is how much? which 1 more expensice

3)are all pionneer and kenwood dvd HU is not build in gps function? except 1 unit for kenwood which cost 5k as me told by acc shop. so is the pioneer unit in pic got build in gps?

4) if want to add on external papagp gps board on the branded unit like kenwood, how much to cost? i been quote RM800 to 1k