I had the following CS salads:
Backlot Express at DHS:
Southwest Salad with Chicken over mixed greens, crisp corn tortilla, black bean relish, grilled sweet plantains and chimichurri dressing $7.19 (I think mine was without chicken, but otherwise it sounds very much like what I had)
This was very good, a bit different, lots of different tastes going on there. I think it was my favourite
Sunshine Seasons at Epcot:
Roasted Beets and Goat Cheese Salad with Cilantro and Lime dressing $7.09
This was nice, but I am not such a great fan of beets. I found it a bit bland.
Seared Tuna on Mixed Greens with Sesame Rice Wine dressing $8.39
Really liked this, had it three times so far. However, the quality of the tuna varies.
Cantina de San Angels at Epcot:
Ensalada Mexicana - tortilla shell filled with grilled chicken, black refried beans, lettuce, tomato, sour cream, cheese and Mexican salsa $8.75
Not good at all! I think it was the worst salad I ever ordered. Very plain, no dressing

and the chicken was very dark meet.
Hope this helps! I will add pictures later, once I am at home and can access them.