I have a Surefire L1 (Cree) that I use during pre-dawn outdoor workouts with gloves. Highly recommended. You might also consider the E1L (Cree), which has slightly less output but flatter, longer regulated runtime and also has a clickie tailcap instead of a twistie (which the L1 has). Both have great gnurling and are easy to grip with or without gloves. Depending on how thick your gloves are, you might find a clickie easier to deal with than a twistie.