These are HD's version of Cree's new "full definition" (rather than their "TrueWhite") CR6 downlights. The difference is that the cheaper one doesn't render colors as well; so colors will be duller than they appear with the $35 version (which is only $30 if you buy a 2-pack or 4-pack online). Note the CRI (color rendering index) in the specifications for the two different lamps - 90 vs. 80. This is an industry-wide metric for measuring color rendering quality, higher is better. The 90 CRI bulbs will look similar to an incandescent bulb; the 80 CRI will be more like a CFL.

I'd go for the more expensive version except for places where high quality light isn't that important, like hallways or basements. For kitchens, bedrooms, or living rooms, the more expensive version is easily worth the small added cost IMO.

Thanks for the clarification!

Wow these have just become available and already the price has dropped (at least in my area where some Energy Star LEDs get discounts provided by the local utility) to $16.97 each. That's barely more than a trim kit alone costs, and this module includes a built-in trim kit plus an LED light! But I still don't care for the dingy light quality from the Cree-built 80 CRI bulbs I've tried, so don't expect this one to be much better. Also should note that it draws more power than the familiar CR6-based Ecosmart - 12.5 watts vs. 9.5, despite both being the same brightness.

The 90 CRI Ecosmart still $35 where I live, even though that one too is Energy Star certified.