I just bought 22 of these:
http://www.ledhut.co.uk/spot-lights/gu10-led-bulbs/gu10-led-3x1-watt-dimable-bulb-320-lumens-50-watt-equiv-3x1-5050-smd-chips.html
3w, decent light output and a good price.
Watch out for the colour at the 'cool white' is a bit clinical and blue.
Warm white...