If you're in Canada, I've had good luck with Luminus Elite (different from the Luminus non-elite available at non-Costco locations) PAR20 and GU10 bulbs from Costco. Or I use Philips warmglow from Home Depot or comparable Ikea bulbs (which have brighter GU10 than the Luminus Elite line) in locations where I want non-ugly dimming.