We like the Antelope NFT ecosystem. EOS, Telos and Wax are all fast, durable, affordable to use and offer EVM compatibility through the EOS EVM and TelosEVM. The community is a bit smaller than some other chains, but they're pretty friendly and the technology is solid.
We're also very excited for the upcoming zkEVM, Modulus, and its' NFT ecosystem!
RE: What is your favorite blockchain to have your NFTs stored and why?