Bump.
After looking into this again, I don't think an expensive after market display is worth it. After researching HKS product, I got turned off and I was interested in the GReddy Touch screen solution... then I started wondering why should I even have an aftermarket display to begin with considering that GReddy's product looks just like a phone.
For my situation:
I don't need to 'record' my track times nor do I NEED an aftermarket display. I already have my AFR and Boost gauge (via HKS EVC). A phone app would suite me better:
OT-2 OBD-II WiFi Interface for PCs and Smartphones
There's positives and negatives but having my phone play music, navigation, monitor my OBD II, text, make calls, blah blah blah is prefect for my situation.