The Champion is great. One advice: change the speaker immediately, I've put a Weber 6" ceramic (it's the only 6" on the market), and old tubes. The final update it should be to build the cabinet with solid pine wood, but with the modifications I made it already sounds perfect.
About the Epi: I don't like the look, but it probably sounds pretty good for what I've read on the Internet. There's a website about the modifications for it.