I also got my 5in1 for Christmas, back in 2016. It's still working fine after 6 years. A few years ago I upgraded from the single solar panel version to
the 2 panel one which comes with a new anemometer. I liked the unit well enough that a year later, when they went on sale again at Costco, I bought a second one. Now I have two displays and a spare 5in1 outdoor unit still in to box.
I have not noticed any problems with the wind readings so far. I have noticed the temps sometimes read high on a sunny day but less so now that I have the dual solar panel version.
One tip, definitely use lithium batteries in the 5in1 outdoors. They'll last at least a couple of years, have much better cold weather performance and don't leak like alkalines.