Werkz Holsters talk about the TLR-7X if it is an upgrade worth it from the TLR-7A... "Is the Streamlight TLR-7 X worth the upgrade from the TLR-7A? Shan dives into the data and gives his thoughts on the new compact offering from Streamlight. Now dual fuel, and increased output, this TLR-7X might be the best compact weaponlight on the market."