I use three lights on patrol as well. The Streamlight SL-20X, a sturdy and reliable light.
On my belt I have an Olight M-20. A fantastic sturdy little light, very bright. I've dropped it, dunked it, and subjected it to the daily abuse of patrol for 2+ years with no issues. Plus it uses rechargable 18650 batteries ($10), or two CR123s. Whats not to love?
Lastly, my Streamlight TLR-1S. Great light too.