I have had several surefire and streamlight. I have three TLR1 HLs and two TLR7s. I have an older surefire integrated light on my marine magnum 870 with a drop in LED that a buddy gave me.

I had a Protac HL-X 1000 lumen streamlight on my SBR but ended up putting a TLR1HL with pressure switch. Same lumens but half the size.