A FF/SD makes a huge difference in an Amiga display to any good monitor. Too many people try to save a few dollars by getting just s scan doubler, and they don't cut it.
On my Amigas I don't use anything like Magic Workbench. I just display a graphic background (usually my car at the dragstrip), and use fairly fancy New Icons and a Start bar clone. That is pretty much what my Windoze machine looks like too.