I got down to exactly the same decision when I bought. CGM or IBM.
I drove both and sat them side by side in the sunlight. The deep metallic colors of the CGM won me over. Pictures cannot capture it.
However, there isnt a wrong choice here. It is simply a matter of personal taste.
The IBM is also very very beautiful.
Jannetty 75 RWHP Performance Package and Tune.
Rotofab Intake, Big Gulp and WW Relocation Kit.
MRR 228 Wheels on Continental DWS06 Extremes.