I have better lighting now with the LED recessed. In the adjacent room, the 55 watt 2D surface mount fluorescent fixture was replaced as the space was enlarged and replaced with 5 LR6 lamps (10.5 watts). The space is now better lit than before and the power consumption is less especially since the lights are slightly dimmed.

The light output is 2700k which is just like a traditional incandescent light.

The 6" cans and lamps are cheaper than the 4" cans + LR4. The Cree xR6 ( where x == L :: x == C) do not require any trim ring.

The CR6 is dimmable to ~5%. You should be able to look at the lights at Home Depot (CR6) or Lamps Plus.

There may be flickering if the dimmer is not matched to the load. ie - the load is too small to be dimmed. For instance the Leviton Vizia RF+ has a min load of 40W which makes it unusable with just 1 or 2 LR6 lamps (total load for 2 - 21 watts).

Lutron dimmers seem to be better than Leviton.

WOW! The second shot looks AWESOME -- very natural looking color rendering -- did your camera settings have to be tweaked? Or maybe you used a flash...

The main reason I am leaning toward the 4" housing is the additional placement flexibility they afford in a modest sized kitchen with standard height ceilings.

I think I tweaked the camera. No flash.
The lights are the same and the 2 pics are just 2 sides of the same room now. The room is 8' in height. You can have fewer lights with the LR6 (650 lumens) than LR4 (~525 lumens).

I thought about the 4" housing but could not justify the price premium. The LR4 has a lower efficiency than the LR6 range too.

Unless someone has a side source for LR4 lamps for a song...