Another Slingbox Question

[cohowap]

Hello all,
Im debating on getting a sling box, and wanted to reach out to someone who actually uses it with a few questions.

1) I noticed that they were selling the software to play it on thier website for $30... does this mean if I wanted to use it, I need to get the hardware for $200+ and the software for Pocket PC and Smartphone at $30 each?

2) Ive seen a few questions around this but no definent answer, can my wife and I both connect to the slingbox at the same time? or will we need 2 box's.

3) Does it support full digital cable (assuming yes as the site says)? On-Demand?

4) Any good comments about it?

Ill keep reading the mess of other posts until someone replys.
Thanks