I think this is pretty much a personal preference type of decision. With the neo-gui wallet you have to download the entire blockchain which, I think, puts of a lot of people so they prefer to use a wallet such as https://neotracker.io/wallet or https://www.youtube.com/watch?v=6r1DpUhEjbo.
A list of wallets are availble here https://www.reddit.com/r/NEO/

My personal preference is the neo-gui wallet as I've been used to it from the Antshares days.