If you're using a computer from 1992, you should adjust your expectations accordingly. Amigas are great retro fun, and some modern add-ons like PPC accelerators and PCI busses with graphics cards can drag the Amiga a few years further to the late 1990s... but if you're hoping to get a whizzbang flashy colorful 2007 display on an Amiga 1200, I think your hopes are going to be dashed.
They're cool computers, I absolutely love my 1200... but I don't expect it to look and feel like my shiny modern Linux system.