As Dave mentioned, the 2-5 of the new key works well.Always make the change a half step from the key you have played,there will always be an inversion to use..2 chord a minor seven and a 5 chord seventh..
Also you can use an arpeggio of the 2/5..
Donny,the transition is important for smoothness.
Transpose button won't do it without playing the change.
Also you will destroy a player with good ears with transpose button.