[Sailrace]

I have the junior, and while physically, there is a jack there, it is plugged, and i don't believe it is connected to anything. If you want to be certain, email Seidio, i'm sure they can fill you in. As for the cupholder...to be honest, i've never tried. I only use it in the office.

I think the standard and junior are the same physical design, but the standard has more "stuff" like the 3.5 mm jack and the speakerphone.