I ordered from three separate floral wholesalers for my daughter's wedding (Fifty Flowers, Whole Blossoms and Sam's Club). I had specific flowers that my daughter wanted and went with the less expensive vendor for each type.
The flowers that I ordered from Fifty Flowers were the Creamy Ivory Peony Rose, the White Cloud Spray Garden Roses, Billy Balls (Craspedia) and Dusty Miller. Lavender and White Wax Flower ordered from Whole Blossoms and White Hydrangea from Sam's Club. All were in great shape and looked gorgeous for the wedding, though Fifty Flowers seemed to have the best customer service/communication.
I would definitely order from any of the three vendors again. If using a wholesaler, be sure to sign up for their newsletter - I saved money this way by getting % off coupons and notices of sales on particular flowers.
I ordered TONS of flowers as we had a LOT of space to decorate and came in at $1,000. It was a lot of work, but worth it - the flowers were gorgeous!