Hey luvncoffee:
In my humble opinion, I feel you should only feature one coffee. There are no advantages for you to carry multiple coffees unless you are a supermarket that has coffee displays and bins. After all they make additional money from these coffee companies for shelf space, etc. Supermarkets don't have to concern themselves with customer loyality only sales. You however must fine tune your market and serve and educate your customer on a coffee that you are proud to feature. Besides you don't want to start off on the wrong foot, i.e., differences in quality, roasting, taste, price differences, and the level of support to name a few. Truthfully, it is a two way street; if your roaster is good, they will take care of you properly, but you on the other hand must do the same for them especially if they have invested the time in assisting you with getting started and supporting you when things are tough. It's really kind of a slap in the face if one roaster does all of the work, and the other one just comes in and gets the business.
So take some of these thoughts in consideration when you finally select the roaster of your choice. :grin: