LEGO, short for 'Leg Godt' meaning 'play well'. I prefer Lego as a singular and plural form of the word referring to the building bricks. Legos sounds odd/off/weird to me, whereas Lego building bricks as a plural form sounds as good to me as Lego by itself. I understand why someone would be okay with Legos, even when comparing to Macs or Hondas. Legos almost sounds like Lagos. Lego is like rice for me. I don't say rices. Maybe it's the consonant/vowel setup.