The Reebok I-run is perfect for home fitness. I brought it because it was reasonably priced and I wanted to start running - eventually getting up to long distance and "fun-run" levels - without looking like an unfit, gasping buffoon by starting off running outside.
The top speed is highly amicable but not perfect if your a super-sprinter, but for joggers and running training it's highly ideal. It folds away both horizontally and vertically, at first I found it to be quite heavy lifting when storing it vertically but compared to others it's exceptionally light, and your arms get used to it after a week or so. Comes with an "oiling kit" and a nice little guide, there are 6 programs but I normally just use free-run, adjusting the speed when needed. The calorie count is pretty accurate as is the mile count, the screen is bright and easy to understand and the whole treadmill has a stylish design that's suits a home, instead of the bulky commercial gym look.
However, as everything has it's downsides, the heart rate monitor can be out sometimes (it's averagely in sync, but doesn't recognise change quick enough) compared to a sepate HRM. The measurements can't be changed, such as KM instead of Miles, and with a white finish it gets dusty and dirty quick, so if you're a bit of a neat freak like me it needs a wipe and a dust at least once a week. the wheels don't spin so well so they wear down on one side and leave black marks on carpet, but this can easily be prevented if you loosen them before use.
Other than that, I definately reccomend this if your looking for a treadmill, it's sturdy (even at the higher speeds) and we've been using it collectively at least twice a day for the last 2 years and not a problem yet.