I started looking at that the other day, I am not concerned too much about the money rather then its sound and function.
I see they even offer Ilink for it which might be super useful for my wife.
Have you used the dynavin?
I found a seller on eBay last night and asked them some questions, waiting on a reply.
I can't say I am surprised about the sound on the eonon, I've installed plenty of direct fits and wasn't ever overall impressed with them in the past.
I'd seen a lot of reviews here of people liking them, not this particular model.
Most didn't have DSP or bypassed it all together.

__________________
E36 M3 Schwartz on Schwartz
E36 328i hellrot(ed) clear coat
E70 X5M (12) its black on black too!
E53 X5 (06) 4.4 sport Imola
P38 Range Rover 4.6