Stitch in the ditch can be hard on such a large quilt...maybe the large meander is the better idea. Although I do like the idea of SITD for the brown. I agree with someone above who thought the large meander would soften the quilt. Although if the quilt is for a man, maybe that's not necessary. Maybe echo quilting or some other pattern in the white space would be good.
One thing I do when I can't decide is to get a large roll of string from the $ store, and lay the string out in the quilting pattern I'm thinking about. And then step back to see what it looks like. Sometimes the answer is more clear that way.
Good luck deciding! It's a very pretty quilt!