I’ve got a HL account and an iWeb account. Ignoring costs, you can look those up on the sites, they are like chalk and cheese.
The HL one is a polished site that offers you pretty much everything you could need, until you turn day-trader. Even then I might still work for you.
iWeb is like some teenager has knocked it together in an afternoon. I does the buying and selling OK, but from a user friendly point of view its a non-starter. It’s even hard to find a particular stock/fund etc.
My original plan was to open the iWeb and at some point transfer all my HL holding over. In the early phases of deciding if that is sensible or not. So currently I use the iWeb for the trading, and the HL for the info. I set up a virtual portfolio that mirrors the iWeb one.
Gut feeling, if you’ve never done anything like it before go with one that puppy walks you. Out of the two I’ve used, HL would win that hands down.