MBV thoughts . . . 
From the MBV group, the popular mixing flavors (mix with fruits and such to create something new) are Whipped Cream, Graham Cracker, and Caramel Candy.  IMO, WC and GC are secret gems that mix well with pricier brands to "extend their life".  Or use WC and GC mixed with, say, Lemon Goddess (which can taste like Pledge on its own) to make a Lemon Chiffon Pie flavor.
Popular flavors are cinnamon roll, butterscotch, caramel apple, and hawk sauce.  These are also pretty good right from the package (steeping optional.)  Because MBV creates your juice on the spot (especially with custom PG/VG ratios) and they ship so quickly, the juices do need some steep time.  Consider the ultrsonic cleaner steep method if you want your stuff done quicker than 2 weeks.
Farmer's Market is Lavender Lemonade, so I can see how some people would find that strange.  
Hop on over to the MBV thread in the E-Liquid forum and see what flavors people are talking about.  The latest discussion has been about the new sample, Black Clove.
When you order from MBV, keep in mind - always use the coupon code for 10% off (vaporfrombaker), orders over $50 have free shipping, and any orders over $15 get a 15 ml.  free sample.  You can request what sample you would like (specify flavor, nic, and PG/VG ratio.)  If you don't request a sample, they will send you their flavor du jour.