Haha, based on you described, I'm in the same position as you were previously. I know its a lot of work, but also very satisfied! I'm very enjoying the process of making coffee, and also enjoy how people around me enjoy my coffee

If you care for a similar cup profile with potentially higher quality beans, I’d characterize Dunkin original blend as a medium-light roast (lighter than Starbucks’ Pike). Aroma: toasted cereal, brown sugar, roast almond, and hint of citrus. Flavor: caramel sugar, roast nut, hint of milk choc and citrus. Acidity: sweet/malic, soft and smooth. Body: light/medium, silky. Overall: Very well balanced but simplistic.

A blend to achieve this cup would rely on primarily (50-60%) Brazilian naturals for the core sweetness, with Colombian washed for the clean citric-malic acidity and silky body (~25%), and some mix of Guatemala/Honduras and Ethiopia washed for the last quarter to tweak body and acids.

If this profile (sweet-nutty, caramel-driven profiles with gentle citrus lift) is absolutely your jam, I’d check out the following blends for a similar cup put together from higher graded green beans:

  Counter Culture - Big Trouble
  Intelligentsia - El Gallo Breakfast 
  Stumptown - Founders
  Blue Bottle - Three Africas
  La Colombe - Nizza
  Tim Wendelboe - House Espresso
  Coffee Collective - Espresso Blend

Counter Culture and Stumptown are probably closest in profile. Intelligentsia and Blue Bottle will add more sparkle to the finish. La Colombe and Square Mile lean sweeter. Wendelboe will be the lightest roast.

Just thought of a few others:

  Onyx - Geometry
  Verve - Street Level
  Campos - Superior Blend
  Proud Mary - Humbler
  Five Elephant - House Blend

Geometry if you want to go for a bit lighter roast that lets some berry sparkle in. Others are more riffing on the theme.

I started with Onyx, Verve, now I bought beans from Prodial, DAK(eightounce), hydrangea & September etc