recommended method for upgrading OS on BBB?

Hi, all -

I’d like to upgrade the OS on my BBB to Debian Jessie (it’s currently running Wheezy). I know there are several pages already on how to do this, but I wanted to know there’s a particular method that’s recommended. Specifically, is it really best to use the MicroSD card approach? I find this a little surprising, but if that’s the way to go, I’ll do it. I can boot my host either in Windows 7 or Debian Jessie, and access the BBB either way.

Thanks for any guidance before I do this.

mz