Power Hub / 12v Outlet

I'm thinking of adding a few electrical accessories to my 2019 T120. In the past I usually just hard wire the kits directly to the bike's battery but a friend suggested I use a Power Hub. I've never used one before, don't know which one to get or what are the benefits. Does anyone have any experience / advice they can offer me? which one should I get, how difficult are they to fit, are they worth the money. My main accessories will be Sat Nav, and a 12 v outlet so I can recharge hearing aid batteries via a USB point. I might invest in some heated clothing as I ride throughout the year. I'm guessing that will probably max out what the bike's battery can give me.

I have been looking at INNOVV 2 and DENALI power hub 2, apart from the price I can see much difference between them. The 12 v outlet I'm thinking about is the Carviya Car Motorcycle 12v - 24v dual hole cigar

Bonne Phil