I'll add the idiom press Super CMOS keyer III kit to the list. I built one about 3 years ago and this keyer will do everything but cook your breakfast. The keyer includes 6 memories. All of the keyer functions and memories are programmed through the paddles.
Take a look at the reviews here on eHam.net then take a look at http://www.idiompress.com/
for more details. The kit went together quickly and the documentation that comes with it is excellent.