Well I have always had good luck with BASF LP35, 1800FT and it looks like this in factory packaging. I have never had any sticky tape issues with it and you can buy it NOS. They also come in very nice Library Boxes
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You can also buy used and even search for music you might like. This is what I did when I had a deck that played 3 3/4. eBay is full of these tapes and it will build you tape inventory, If it's a bad recording you erase them and the good ones you keep.
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