Santa Barbara Cake
Costco keeps getting surprisingly good reviews for their large cakes and there is one in Goleta if you wanted to order and pick up one there. Second Bella Dolce because anything associated with Jade has good parentage, though I believe she had to close down her new shop downtown.
We recently ordered one from Hennings Cake Boutique (new owners) and it was terrible, no flavor whatsoever and overloaded with heavy tasteless frosting. The sell a good story online with their choices of cakes, filling and frosting flavors and it looked rather opulent upon first glance for a standard bakery cake, but it was useless wasted calories.