Can you reccomend the Rally 100 powermeter? Should I be aware of any issues commonly occurring?

I am thinking about getting a single sided unit. As far as I know previous Garmin models had frequent issues with the batteries. Are those more any other still an issue? 

I prefer this model over the Favero models for their solution with batteries. I plan to keep the pedals in use for many years and while rechargeable batteries are nice, I don't like that Favero glues them in shut and does not provide replacement. I already have that with the Edge device. I am not looking forward towards decaying pedal batteries as well.