Between mobile and a desktop wallet which one do you prefer the most and why? Again I think desktop wallets have more open source wallets than mobile, which desktop wallet is the best open-source wallet that you know of?
It depends on the context and size of holdings and purpose of the wallet.
If spending is the purpose, the contents should remain and should go to a mobile wallet. (because you can't take your desktop to the store)
If holding is the purpose, the contents can be larger and should go to a more secure wallet IE: desktop or hardware. (this is also good for staking purposes.)