Guys, just wanted to share my personal experience. In the end made up my mind to buy AUX Link car adapter. I was trying to find the best deal and it's really cheaper to buy it at the official online store AUX Car Kits. The delivery took just five days. At first I tried to install it on my own, but experiences some troubles extracting the car stereo. So finally I had it installed in the nearest auto workshop. It took around 10 minutes. So far totally contempted with the adapter.
Advantages:
- crystal clear sound
- can be used as a charger
- with Bluetooth dongle can be used as a car hands-free kit
- music control with steering wheel buttons and buttons on the car head unit (very convenient)
- read all music formats
- compatible with my Apple devices, but there is also a 3.5 mm plug for other mobile devices
- free and fast delivery
- takes very little space and almost invisible
- now I can listen to all my favourite compositions without carrying piles of CDs.
Disadvantages:
- relatively expensive as I also bought additional Bluetooth dongle
- could't easily extract the head unit so had to go to service center
But taking everything into account, I believe it's a good price-quality ratio. So all in all it's worth it.