Overall, probably a pretty good charger. Location can be touchy. Moving my Galaxy 9+ just a fraction of an inch can change from charging to not charging. Doesn't charge as fast as other fast chargers I've used with my Galaxy, but does the job.
The additional micro USB is a great addition and the reason I bought this charger. Use the micro USB to charge my Galaxy Watch, and the main base to charge the phone. Haven't actually timed both together as I expect that will slow both down, but I believe it will function with both working simultaneously.