Watching the video of reverse tiller vs forward tiller, the reverse tiller seems to incorporate top vegetation more. I have a forward tiller and it does a good job, at least for me and it climbs over rocks and other debris rather than bind up or break a tine.
I recently used mine to make a fire break after a pasture fire got out of control and even running very fast, it broke up the sod better than a disk would have, walked over small pine trees (2-3" diameter) and chopped them up. I am happy with my forward rotation tiller and it is much cheaper than a reverse rotation one.
I had planned use for only doing a small garden so making multiple passes to mix everything up well is not a big deal. Could a reverse rotation tiller do it in one pass, perhaps, perhaps not, but it's not a big deal to make 2 or even 3 passes. I used mine to till up my neighbors garden that had about 8" of leaves piled on it for adding organic matter. After 2 passes it looked pretty good but after 3 it had chopped everything up well and incorporated it nicely.
If you are doing acres and acres of tilling having to do multiple passes might be objectionable, but for small garden plots, it will be lifetime before I spend enough to justify the extra cost of a reverse rotation tiller.
