I have owned in succession the Sophia 1's, WP7's/WATCHDog, MAXX2 and now MAXX3. All of them had a flawless quality finish. I have never heard of or seen complaints of finish issues in talking with many other Wilson owners either, though I am sure some likely exist. I'm sure based on my own experiences, whatever issues there may have been were resolved.
Best to let those who've had first hand experiences contribute their own issues if they have them. I recall a gentleman elsewhere in this forum who was bashing an electronics company on line and calling their QC and service bad because he had a buddy, who's local friend bought some expensive amps and had them short out on delivery. It turns out (reported by the actual dealer), not mentioned was the fact they were ship-damaged or the fact the company offered to replace them sight unseen. Loose references to other threads and others experiences are just that.
Grant
Shunyata