There's a pretty significant price difference: the 7Artisans version is about $359USD and the Voigtlander is about $300USD more.
I'm what we used to call an advanced amateur and would use it only on occasion, but sharpness is still important to me.
Years ago I had the Voigtlander 15mm for Leica M film and it was ok. Now I'm strictly using a Z6 and wondering...
--Bob
You get what you pay for. My Pergear 12mm is pretty decentered. If I could afford a Voigtlander I wouldn't hesitate.
My TT Artisan 35mm f/1.4 is ok and fun, but I wouldn't call it worthy of printing from.
I have the Voigtländer 15mm for Sony, now adapted to a Z7 with a Megadap. It is a great lens, very easy to handle and sharp from center into the corners. My copy had an out-of-the-box issue (mushy corners); it took a warranty tour to the manufacturer and came back perfectly adjusted. And it is small enough to take it everywhere. One of my favourites, together with its friend the 40/1.2