My Breezer came to me in 1x7. Since I upgraded the rear wheel to one that accepts cassettes, it is now 1x8. I'm not sure I would necessarily build up a bike from scratch with a 1x drivetrain. 1x8 though with a 36T chainring and 12-32 cassette works fine up and down the hills on my commute. I never miss a low ring and seldom miss a high ring. The spacing between gears isn't optimal, but who the hell wants to get to work faster? Me, I like to take my time getting to work