I see at this point it looks like MATIC is still getting more attention, and that's most evident when looking at the current capitalization of both. I think MATIC has a significant potential opportunity with the above motivations to become a strong competitor of layer 2, the ground for MATIC price growth will still have a very prosperous way.
long-term, Solana is better pick, IMO
Matic is a good project, that is here to stay, but influence will go down with Ethereum2.0 and PoS, and Solana has a complete ecosystem, that could thrive in the future
nevertheless, both are good, and should bring fine returns, as investment, do not take this as financial advise and do your own analysis