I've found that the dogs in the big dog side are generally a little nicer. I've seen a lot of little dogs on the big dog side, and to the most part, they get left alone, or they're played with gentler. But ultimately it's really your call, and you'll need to ask yourself certain questions. Like, does your big dog get nervous around other big dogs?
I guess it depends on your dogs and which one is more docile and the people in the dog park. You know people can be.
Thanks! Your answer is awaiting moderation.