Yes, I will subscribe their service in a few days, and will definitely leave more feedback here.
I did some more research on the Magic Number. The on-line discussion seems positive. Actually I find out a very interesting idea:
Some people saying they can use the Telus One Number unlimited services + Magic number. Which means it is possible to have the unlimited cell phone call with about $17 dollars.
Well, I will not test that idea yet, since I am with Rogers and I don't want to loose my cell phone number.
About you mentioned CID, I think that might be a problem for me, too. We will see..
Anyway, I will leave more message and feedback after I subscribe their services. Thanks again for your good info