For home roasting - do you prefer buying bulk, or samplers

I just got my first Roaster (an SR800), and am ordering some green beans from Sweet Marias. Since I'm still learning what I like, I'll be ordering a sampler to start out with, but thinking about it got me curious. Do you all prefer to sample a large variety of different green beans, or do you prefer to "learn" a few different beans and really dial in the characteristics of that bean?