I'm going to be buying myself a brand-new 1 X 12 100 Watt Boss Katana Mk II amp soon so I have something I can easily tote to live jams...
If you're only doing home playing/recording and local jams, I would think the 50w would be plenty.
The 100 does have a couple minor extras, but the 50 is much more backseat and back friendly. 50w is still ridiculously loud and plenty of headroom.