I haven't bought any "new" Amiga hardware in 20+ years, but if I was going to get my wallet out for anything it would be the UltimatePPC or the X-Surf 100.
I'm mostly just interested in getting an RJ-45 ethernet port, and anything else that comes with it is a bonus. I've got some kind of network card with two BNC connectors that came with an A3000T I recently bought but it seems like it might be a pain to get them connected up to a modern router. I've yet to really play with a pile of Amigas I have and it feels like it's because these days I can't use a computer without being able to transfer stuff to and from it easily.