I was looking at Sirius.com to see about the Best Of XM package. On the page that has the 3-months free offer, it says that there is a $15 activation fee when you add the package. On the Best Of XM FAQ page, which seems to have been put up before the 3-months free offer, it says that there is fee to upgrade. So now, instead of paying $4/month for the first 3 months with no activation fee, you can now get the first 3 months free with a $15 activiation fee - a savings of -$3! So, what I'm asking here, for anyone with the Best of XM - was there a fee to upgrade?