I have a Nordic Track E7.1 and its not bad. Definitely not bad for home but definitely not fitness center quality.
Its fine if you have a place to use it like spare room or basement but it is almost 225lbs so its heavy to move in and out when you want to use it but it will hold over a 300 lb person.
Wish the monitor did a little more but you can hook up your I-pod and go to town.
For the 925.00 I paid it serves its purpose.
Whatever brand you get go for something that will handle your weight, has the rear wheel and ball bearings.
The gym I used to work out at had an excellent one but I don't remember the name. The YMCA I go to has a couple that are very smooth but the stride is way too short for me so they aren't comfortable. I don't know if the stride length is adjustable or not but check it out and make sure you like it.