If you work in a small shop where space is at a premium you might want to consider purchasing a bendchtop jointer rather than a stationary 6″ jointer. A benchtop jointer will deliver the same performance and precision as a stationary jointer, accurately truing stock up to 6″ wide and up to about 6 feet long.
The King Canada KC-6HJC is equipped with a 1 HP, 10 Amp motor, rated for a maximum 1/8″ depth of cut. While I found that it could easily remove the full 1/8″ in a single pass, I typically keep my cuts to about 1/32″. It places less strain on the motor, and the results are better. I like that the jointer only draws 10 amps, as I can plug it into a shared circuit (with my shop vac, for example), without worrying that the circuit breaker will trip.