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?
Desktop wallet is open source indeed, you can get the source on github usually, even some mobile wallets are open source too.
I prefer to use mobile wallet when i want to buy and sell coins. But if i want to hold the coin, desktop wallet is good because i can use it as a cold storage. Depends on what purpose we want to use, we should choose the wallet accordingly.