These lights are off the hook bright. I got two, one spot and one cornering for my DRZ400S and I cannot believe how good they are. No one will miss you on the road if you use them to make yourself conspicuous in the day and they light up the night in the dark. Very compact and low power draw makes them perfect for the Adventure and dual sport motorcycle application. I am extremely happy with the S1 lights.
Just got my new S1 spot beams lights today. The first thing I did was hook 1 light up to see how it compares to the S2 pros I already have and they preform much better than I expected. I will never run a cheap led after having my S2 pros and especially my new S1 spot