It looks like this is solved - nice find. I was trying to decide between the same two snares awhile back and had the chance to get both for a decent price. (My Powertone was $50 on eBay because the seller labeled it incorrectly). The Krupa SK felt better to play (prefer stick savers over flanged hoops for rim shots) and I liked it better sonically as well. Great sounding snare. My Dayton Powertone always sounded a bit compressed regardless of set up and the note was a bit odd so I'd always dry it way out to record, but if I had to do it again I'd probably take the Powertone simply because it's an amazingly built drum and the most reliable hardware wise of the American vintage brands. The strainer is great and the shell is solid. The Slingy shell is prone to dents near the Zoomatic strainer and as for that strainer itself…well, I'll say it wasn't for me and I wouldn't be at ease gigging with it too much. Glad you scored a quality drum.
50 for a Powertone? Well done! I paid around 250 Euro and I felt like I had won, but 50 is an amazing price. Sounds better when you get a good deal in it. :)
It definitely needs some new heads. I'm in Europe so it's hard to find the Vintage Remos so I'm going with Ambassador coated over Ambassador Hazy. Old reliables.