I've brewed 27 different Mr. Beer recipes in 2010 ranging from simple to complicated and I doubt I'll ever 'advance' to another type of brewing. Every recipe has produced great tasting beer and I've never had an issue with infection, oxidation or dead yeast just following the standard Mr. Beer directions. I've never moved the batches to a secondary fermenter or cold crashed them before bottling since the beers always come out clear and have great foam.
Mr. Beer brewing is perfect for my lifestyle and wallet, I can brew really good tasting beer with a minimum of fuss and bother. On brew day I typically brew 6 batches (12 gallons) of beer in my fermenters in about 7 hours start to finish including cleanup.
The 2 .13 gallon batch sizes are perfect for experimenting with new recipe additions and the kegs do not take up a lot of room. Instead of 'moving on' to other types of brewing I just keep tuning and tweaking my Mr. Beer recipes using the smaller fermenters.
Novacaine Recipe brewed June 2010:
1 Can West Coast Pale Ale HME
1 Can St. Patrick's Irish Stout HME
1 Can Golden Wheat UME
2 Cans Pale Export UME
2 Packets Dry Brewing Yeast
2 Packets Sterling Pellet Hops
2 Packets Northern Brewer Pellet Hops
1 Pouch Ale Liquid Yeast
2 Muslin Hop Sacks