I think that some of the "good" deals on the machines are 'Floor Models" from various dealers. There is nothing wrong with them and if you are serious I would suggest you "test drive" the ones you mentioned and be prepared to take advantage of the show deals. Come to Houston and take a look. It is worth the drive. I second georgiat's suggestion to see Carrie at the ABM Innova booth. She carries several brands and will allow you to make your decision but will keep you informed as you ask questions about any and all the machines she carries.
Wini in Houston