I just got the smartlink and i LOVEEEE it...its awesome...I used the bluetooth with my phone and it was awesome...very clear voice and reception b/w the fm and ha..it was great. I can also turn up my ha or turn it down and change programs with the smartlink..and its light and nice! I live in canada and the cost of the smartlink with all the accessories, like wire to attach to diff things like tv, comp, etc, and the charger and the 2 diff cords for the range of the fm ...(not incl the boot that attaches to ha) was 2700 but my school paid for mine
and i get to keep it! You can also change the mode on the fm like there are 3 diff modes for listening depending on the amount of noise there is...very handy!!!
I would totally reccommend it..you have to order thru ur audi tho i think, and for sure go to the website!