One bun that didn't make the print story -- mainly because it's a dinner-roll size -- came from the L.A.-based La Brea Bakery. The buns, called Telera Sandwich Rolls, are flat-out delicious -- and would work perfect as slider buns. They're basically French bread that's partially baked. It's not too sour, nor too chewy. Look for them at most grocery stores. www.labreabakery.com
Just in case you missed the bun feature, here's the upshot:
Dave's Killer Bread makes a bun called Million Dollar Bun. It's terrific, but kind of expensive. A cheaper and also stellar bun comes from Angelic Bakehouse. Others to look for are Safeway's Open Nature brand and Trader Joe's buns.
Buns to avoid include the basic white buns at Whole Foods, Milton's white burger buns and the Whole Foods Gluten-Free buns that come in the freezer case. Not good at all.