Not a big bottled dressing fan, but...
If you live in Texas or can shop at Central Market or HEB, I love their house brand "Texas Twist" dressings. Especially the Balsamic Bleu Cheese with Pecans! Creamy balsamic...yummy!!
Also in the line - Mango Margarita, Roasted Poblano Ceasar, Spicy Peanut Jalapeno. and an avocado something-or-other whose name eludes me.