Ive used several now, and I don't know that I've had one yet that was easy to quickly see/read the display.
I have the 9500ix in the Camaro, and I can't see it during the day either, and Camaros allow much less light into the interior.
I don't recall the manufacturer, but at one point there was a product that would feed the detector data into the data bus using the OBD2 port, and would then display the info on the DIC and/or HUD. That would be nice.