I don't particularly have time to write a review that might happen to answer what you want to know - so you'll have to accept that or ask a more specific question
But , to help a little, it holds boost very well, is very flexible, very clear to read, has many functions including the optional A/F which I use, etc
The dual-solenoid unit itself is the same however, I believe the i-Color has the better electronics in the controller. Difficult to say for sure as I've never actually owned the SBC-iD.
....and that's the reason why I can't help you too much with the other questions.
Way better than the AVC-R though....
I specifically went for the i-color as you could plug a good A/F sensor into it.