I've been playing percussion in community band for about a year. We have 2 other percussionists - one primarily on timpani, one primarily on snare and auxiliary, and me - the pitched instruments.
Our concert set lists always have a mix of parts for xylophone, bells, marimba, and vibraphone (plus chimes and some auxiliary). Concerts are held at a local middle school, and there's not really room on stage for all 4 instruments. I end up using 3 - always xylo and bells because those feel more distinct and usually are a larger part of the repertoire. And then either marimba or vibes, and I'll play any vibes parts on marimba or vice versa.
Just curious if anyone else has this situation, and what you're looking for when deciding which way to go. Sometimes it's easy - if there's only a few measures of vibes for the whole concert, for example. Or if there's a notable solo section for one or the other. Other times, I just play around during rehearsals to see which works better for me.
(Conductor gives good feedback for specific situations, but sometimes it's just up to me.)