I've had one for awhile and am very pleased. I've only used rechargable AA batteries so can't compare with the Cr 123a. I use an innertube mount that works great - no wobbles and easily adjustable. It also protects the bar and flashlight from scratching each other. I made a little visor that sticks on with double side tape that knocks down some of the spill to make it easier on approaching cars. It also reflects light down right in front of the bike which is nice. The spill is good on this light and it reaches down the road well. Be aware the grey version seems a bit blue to me.