I tried some out on a domestic job, carpet was a standard polyprop... I found using my TM5 produced the best results as this lifted the pile as well as all the human and pet hair... Even after a good ore vac with the kirby.
Low profile carpets would benefit more from a rotary, Solutions now stock a rather good green MF with blue agitation strips which work very well.
Not sure you could do a comparison with DF as I'm not sure DF is strictly an encap product?