We eventually found a good site in our kitchen for the 5W LED "cool" (6000K) spot from UltraLeds.co.uk (which was the highest power available ~2007), marked on the side "civilight", and though it is a little weak/watery, it works fine with the blue elements of the decor. (One issue with a light that is going to last many many years and cost lots is that we'll have to think about and plan more carefully what we buy, whereas before we knew we'd be buying a new bulb inside a year anyway, and didn't have much choice in light colour nor CRI/rendering issues.)

Note: this bulb caused significant interference on a VHF FM radio about 2m away, unlike the CFLs in the same spotlight lighting strip.

This item failed after a little over 2 years with Ultraleds offering no help even though one might find this early failure "not fit for purpose".

Update 2010-03-19: One of the first highish-powered domestic LED bulbs (5W Edison screw) that we have been testing failed after a little over 2 years' use. Ultraleds (and their MD) with who I had previously been impressed were dismissive about my suggestion that devices sold in part on a promise of long life should be considered "not fit for purpose" if they fail this quickly, regardless of nominal warranty period.

Update 2012-02-01: I finally disassembled the unit to extract the board with 5 series LEDs, which draws 60mA@14V (0.8W), 200mA@15V (3W), 340mA@16V (5W+), ie about 3.2V/340mA for rated output, if heatsinked on the original case. So I could use it as part of my LiFePO4 battery dump load with care.