I started out using the Mr. Beer kit and never managed to turn out a decent batch of beer. I finally said 'Screw it!' and went over to the Michigan Brewing Company's homebrew supply store in Webberville Michigan (they've been out of business for awhile now...that's a story in itself as to why they went under) and bought a Brewer's Best Homebrewing kit and two cases of glass bottles. After getting several decent batches under my belt, I went back to MBC and bought a glass carboy and a few other odds and ends to add to my brewing equipment. My Mr. Beer set has been slowly gathering dust on top of the cabinets above the kitchen counter for several years now.
The problem wasn't with the equipment.
I was going to post more, but then I saw that this thread started more than a decade ago, so I deleted the rest of my response and kept the reply to be amused when this necro thread keeps arising from the dead.