I work for an electrical wholesaler and you can pick a GU10 LED lamp up for about £5.99+ VAT and they run at about 2 watts but they are not that very good as there more like a beam down to the floor, i would just stay with the standard GU10 they give of the best light and it's more spread out and it will only cost you about £1.25 + vat maybe cheaper if you go to an electrical wholesaler.