I have been very happy with my Vision Fitness T9600, but for the ones you are looking at I would go with the Precor or the Horizon.
So far as CS goes, after we moved back in 2010, something went wrong with the T9600; it would suddenly stop while in use. After a call to the customer support line and some minor diagnosing they shipped out what they thought was the problem, no luck, shipped out another piece, still no luck, one final shipment and all is well. Luckily I was just within the 5 year warranty so no charges and I now have some spare parts for any future repairs, worked out pretty well for me.
