looking for a headlight, with the day light savings time closing in im feeling the need to get one. Ive seen ranges from 150 to 1500. Im not trying to break the bank on this, do lots of trail riding (paved). Had my eye on the 'CygoLite Expilion 350 USB Headlight' on bike nashbar for just under $100. How many lumens do yall think is suffcient?