AC Wall adapter and USB cable

[KLSR]

Is there pros / cons if I utilise the following BB9300 chargers with a BB Torch 9810.

(A) BB9300 AC wall adapter charging a 9810 phone
(B) BB9300 USB Cable charging a 9810 phone

Is there any pros / cons if a USB cable is used to charge your BB instead of the supplied AC adapter. I assume the USB just take longer for a full charge.

Many thanks.

[SphereZA]

(A) BB9300 AC wall adapter charging a 9810 phone
(B) BB9300 USB Cable charging a 9810 phone

no cons on either, i use my Playbook power cable to charge my 9900 and usb cable between both plus i have a 9800 charger at work for both.