We were with Brookfield for a number of years (5-6 at least) and switched to Parker this year. Brookfield is much more salad-y; lettuce, celery, cabbage. Parker was super-heavy on green beans (which we love) and lighter on, say, arugula (which I also love), and had veggies arrive with slightly different timings (mid-summer potatoes). Both gave plenty of tomatoes (adjusting for a bad year) and squash. Parker ended 3 weeks - a month earlier (end of Oct vs Thanksgiving), but the giant pile of squash and pumpkins lasted until mid-December anyway. We've renewed for Parker this year.

I have the impression that you should get used to cooking a lot of kale no matter what CSA you join. It's the local robust green of choice. Luckily I like it a lot.