I don't like the Companion product line. I think one of the big value points for Wacom products is their longevity and that they hold their value better even than Apple products. The Companions are already released with last years tech, and I see them degrading as the years go by. Not worth it for the cost.
I ended up just buying a Cintiq 13HD to use with my iMac, and then I am planning to buy a Surface Pro 2 for a portable tablet. I may have a change of heart after Apple's announcement today, but I'm sick of waiting for Apple to support a real stylus, and most of the 3rd party capacitive solutions fall far short of the bar IMO. Cost wise, this solution is the same as buying the Windows 8 companion, and I get the benefits of the Cintiq 13HD, and portability/form factor of the Pro 2. Plus the Pro 2 can play games any do anything else a full computer can.
Apple really needs to add stylus support to the iPad. Jobs is gone, they should feel safe doing this now.