I have a surefire G2Z and I'm thinking of getting the 120 lumen lamp to upgrade my 80 lumen one. Is it worth it for the extra 30% light in a self defence aspect? I have new mag led D-cell to use for normal lighting requirements. Also the new led replacement for my mag 4D cell is just as bright as using the Krypton bulb. Is the new mini mag LED high output light worth the $23 over the $9 normal one?