I prefer non-halos. Halos are pretty but trendy, and I like a diamond that can stand on its own. Bottom left gets my vote.
I'm a non-halo-er too. Get one nice big diamond and don't mess it up with all of those little ones around the edge I like all of the other three though!
I'm a non-halo person, too. I think they're great, but they're not as timeless. (I don't necessarily think that's a bad thing, if that's when you got married. But for an anniversary update, I'd want more traditional. I have the 3 stone ring with side diamonds that was popular in 2005. It's not trendy, but it was definitely THE style at the time. I don't mind it because it reminds me of when I got married. If I lost it, I would go a little simpler, not something popular now.)
I like the first one & think it would go well with your band.