When you shop online you are very skeptical of misleading promises. Well Xterra went the extra mile! I first purchased the 4.0e Xterra but found we wanted the incline feature and heart rate control It does not offer. Only had to pay freight back and applied the credit to our new 5.6e that is fantastic! Beefy machine with all the buttons and options we wanted! Great company! Easy to work with!!!!!