I would choose Bitcoin over Solana. Bitcoin has proved it self as one of the dominating store of value assets over time. The proof lies in it’s adoption where big institutions and countries are buying it. It is competing with assets like Gold and real state. I do not see a scenario where it will not capture a good potion of their share in store of value. Solana is also a good project but it’s competing with other L1’s like Ethereum and I do not know who will dominate the defi space.