I call these portable because that is exactly what they are. Their are light weight, in most cases, in the 20 LB range, very easy to maneuver and most of all require very little maintenance.
The 2 cycle tillers/cultivators are perfect for those jobs
in established flower beds and gardens. If you have a small job, go grab your tiller and
take it where you want. Very little room needed especially in those tight hard to get at
places. When your finished you won't be wore out. A very affordable and light weight
These are in the mid range of the tillers. They have wheels mounted on the frame fixed where they can be moved out of the way when in use, the wheels are there just to make it easy to move from one place to another. Most of them have 3-5 hp 4 cycle engines.
This tiller can definitely get the job done and still work in confined areas. They require a little hard work as when holding the tiller handles, it sits on the tines only when tilling, in which a little bit of strength is required, but for confined areas, portability and price it can't be beat.
Rear tine tillers
These range from 4 hp and up to 8hp even more. They can get
the job done, with very little effort on your part even in the toughest of tilling jobs.
You require more room than the front tine tillers and of course they are a good bit
heavier. This is one of advantages of the rear tine tillers. The weight which helps when
tilling those extra tough jobs.