That is definitely an advantage of the rather odd little cube design. I have come to really enjoy having the digital speedo in front of me all the time, even with a dial right beside it. I've had too many vehicles with inaccurate analog gauges. (My truck and the Dodge being two, currently. Dodge has digital speed in the middle, in the truck, I pull live data from my BlueDriver to get my speed/rpm/etc from the OBDII port.) The tach side of the cube layout just looks/feels odd to me though. Although for as much as the tach is really important while driving an automatic ... I suppose it wouldn't matter too much.
I'll play around with all of them, except the white faces I'm certain, and see what sticks.
I've been using the Speedometer Pro iPhone app as a speedometer on my scooter, because the stock speedo reads at least 10% fast. When you're riding a motorcycle, you want to make sure that a brodozer isn't going to ride up your back end because you thought you were doing the speed limit, and you really weren't.
I haven't checked the accuracy of the Santa Cruz speedo yet.
And I agree, the way the tach works in Cube is odd. But I don't really pay attention to the tach any more when driving, since I'm not in a manual transmission vehicle. Although, to be fair, I didn't pay attention to the tach in a manual, either. I learned to shift based on the sound the engine made. Since the first three manual transmission cars I drove didn't have tachs, that was the only way to know when to shift (1973 AMC Hornet wagon, 1968 Dodge A100 van, 1970 AMC Hornet coupe).
I'm currently using Cube, with digital speed in the center, although if I stick with Cube, I'll switch digital speed to something else.