Why aren't the OEM ones not a straightforward fit? They fit fine as they're designed for the car. Yes you have to code (ie tell the car what's fitted) but it is completely straightforward. I did my own.
The most popular OEM is the RNS-510 though does have limitations compared to aftermarket units. But you can add a bluetooth module and a reversing camera that utilises the badge - speak to SteveP about this stuff since he did mine.
By straight forward I meant being plug and play and not having anything more than the unit itself (i.e. GPS Antenna/ additional modules etc). Am I right in saying the RNS-510 does have these extra bits? Where do they have to go?
I normally do prefer OEM set up - even though it's often inferior to the well known aftermarkets brands (and usually just as expensive).
How much would the RNS-510 set up cost me? (roughly).
Also what are the alternatives to RNS-510 (RCD-510?) and what do I get in this model that's not available in older ones?
Is there a How-to guide on the forum so I can see how easy it is?