In terms of quality I prefer solana. As much as gozali NFT who had trended with polygon networks I think NFT in opensea is mostly just duplication, Solana is more qualified even though it does not have a large community can lift some projects that are published in their networks, such as Solanium and Samo.
talking about samo maybe the price has increased sharply because the samo coin is the first coin meme on the Solana network. On the other hand the price of new altcoins on the Solana network does have a better price than on other networks such as BNB or Matic.
my choice is polygon, for all the time of use there are no problems with the network, transactions are fast and most importantly cheap, but the solana network has hung up several times and this is a big minus today, this project occupies the top 10 CMC and should work without failures.
what do you mean Solana network has died several times? So far I'm making transactions on the Solana network without any issues and very low network fees. speaking of rankings on CMC lately Solana's ranking has dropped quite far from the 4th rank to the 9th rank. If this situation continues it is possible that Solana will be eliminated from the top 10 of CMC in the near future.