I play mostly guitar, but i play both
I definitely prefer Guitar, because not only do I find that guitars are underrated, but nothing compares to the sound of an acoustic melody.
I love playing both, but if I just want to jam a bit then I'll pick guitar instantly. It's portable and easy to just pick up and play sometimes.
Guitars have much more variety in playing methods e.g. fingerpicking, conventional picking, tapping, sweep picking, hammerons and pulloffs, bends, etc. Once amps for electric guitars and keyboards/synths come into play, it's much closer.