USB4MAPLE adapter or BlueRetro adapter?

Well, I ask questions to you again ._.xd

I'm thinking about buying a controller adapter especially for convenience

But I have the 2 options mentioned in mind, but I can't decide which one to make/buy.... So, if there is any BlueRetro user or a USB4MAPLE user, please recommend one.

PS: I know there is an internal BlueRetro mod but that one costs $50 on Aliexpress and for now I'm not interested in having so many internal mods.