I have Misi pick-ups in 3 of my 4 ukuleles. Like Kenn2018, I also hate messing with an internal battery. The Misi is an easy 60 second plug-in every once in awhile. I think I recharge my 2 most used ukes about once a month. I've never had one go dead during a performance, but I carry an extra charger in my gear bag just in case I need to do a quick recharge out in public. Since the Misi is an active pick-up, I don't have to use a pre-amp when I plug in to the PA sound system at church (play 2 hours every Sunday). The only other thing I use with my church set up is a Boss tuner pedal. It acts as my on-off switch as well as a tuner. I also plug in to a Roland AC-33 portable acoustic amp for group and public play.
As far as sound goes, I've only used Misi, so I don't have a comparison to the LR Baggs. I have no complaints with the Misi. I will say that my Cocobolo uke sounds better through the Roland amp, and my aNueNue Moonbird sounds better through the church PA sound system. I think that's just a difference in the ukuleles, not in the pick-up.