I have an old Singer hand crank that I take when I want to piece while camping. That way if we camp w/o electric I can still work on something to occupy my time...boys like to fish and I don't (but will eat what they catch! lol)
Whichever is the easiest machine for you to tote around would be my answer. If it's like when I go camping, I'm always having to move stuff around to accommodate meal times, so portability is the key for me.
Christine