I have only had the chance to play with the new XO inside its packaging at Target, but I was impressed. Based on Doug's numbers at FLR, the beam should be pretty cool -- not much throw, but a nice, multipurpose middle of the road beam. The 5 hour regulation is sick.
My main concerns, though, center around Inova's slipping quality control. The reports of the plastic lenses falling off of recent Inova lights are disheartening. I have an older X5, X1, and XO3, and all three are built like tanks. Also, why not put a mirrored reflector in that XO...? I mean, there is nothing to lose, and output and lux to gain.