Bitcoin and Dot are both great options! Dot (Polkadot; for those reading this comment unaware of the coin's full name) is very similar to Cosmos in their intended use and future plans. I think these two will be big competitors in the future, but right now it's hard to say which will perform better long term (I suppose it would be worth listing them as tied).

Bitcoin is obviously seeing a resurgence in demand and is still #1 in the crypto world.

Thank you for your kind comment and suggestions.