Solution: A1200/A600.
It is VERY DIFFICULT and in some models not worth it and impossible to have internet connection in ALL OF THE AMIGA models, all, all, all, ALL except for the A1200/A600. Especially the A1200, especially this model is the only Amiga model THAT EVERYTHING IN IT IS EASY. Hard drive in it easy, USB port on it is easy, internet connection on it is easy, and even running AmigaOS 4.1 on it is easy, EVEN towering it and allowing you to play quake games on it IS WAY easier than any other model out there.
So if you want internet on an ANY Amiga model, A1200. You want to run AmigaOS 4.1, then you should have A1200 computer and if you want USB get an A1200. Want an Amiga model with the highest rate for potential new hardware development, A1200 is the way to go. It is that simple.
I had the choice between two A4000D and both of them have video toaster and all sorts of hardware upgrades and A1200 and I toke the A1200. Because I knew if I wanted to get any of these A4000 computers with internet I am going to have hunt down a VERY RARE and VERY expensive card to give it ethernet support and it is not even wireless.