Personally, I much prefer the satchel. It is quintessentially Chanel IMHO, timeless, classic, polished etc. It also looks more durable than the bowler; the bowler is so smooth it looks like it would show marks quite easily.
As others have said, though, I do think it depends on your overall style vibe and personal preference. I tend to lean more to the dressy side, so the satchel would fit my vibe better. If you’re more casual, though, the bowler might be a better option. … I do think the satchel would look great with jeans and sneakers, just like how the classic flaps look great when worn casually.
Both bags are really large; are these everyday bags? Or more for travel? That might affect which you keep, too.
So much to consider. Good luck making your decision!