Partly as an experiment I ordered x5 of the latest dimmable Very Warm White LED GU10s and received x4 320 Lumen and x1 330 Lumen. Does one 330 Lumen matter (i.e. one is an extra 10 Lumen)? Not to me! I think its great that Bulbs2Go make a sensible decision (lets face it no one is going to identify 10 Lumen difference) and since we are all at the experimental stage with Dimmable LEDs I think some 'adaptation' is fine. The bulbs work REALLY WELL and what I find very impressive is that my wife who hated the "Bright White Floodlights' (as she called them) of the old none dimmable GU10s, cant even tell the difference between the Halogens and the Very Warm White LEDS. Great!