I actually just received this treadmill yesterday and I used it this morning before breakfast for a quick little workout. I think its a great supplement to any other forms of exercise you'll do throughout the day. I actually love the incline, I've read online that some people don't like the incline because it makes it a tad bit more difficult. I enjoy the incline, it feels like I'm actually working out a little harder. By 10 minutes my heart rate was up, and I was sweating. I actually love how small it is, because it's so easy to just lean up against a wall. You can fold it, but I probably won't ever do that. Like the idea of being able to jump on a machine anytime I feel like it.
Overall it was great. I received this within TWO days of ordering it - so that's pretty impressive, and best choice products are a pretty easy company to deal with. They just want you to use the products and enjoy them.
Great little treadmill if you're looking to supplement your workout at the gym!
Also, I didn't build this. I had my best friend do it for me - because, well I'm lazy. But it took him about 30 minutes. He didn't seem to complain, seemed relatively easy. And it seems like he did it fine.