If you already have an L1P I would not get the standard Jet-1 (the single stage) Unless you want to run Li-ION AA sized batteries it wouldn't be worth the upgrade... now the Jetbeam MKII which has multiple ouputs + Strobe features would be worth the upgrade IF you think you'd use the various brightness levels... I always feel comfortable with Strobe features in a light in case of an auto accident... it could be used to alert other drivers of danger.