U should try out the new TriStar CS; it'll clean circles around a "Diesoon" (Dyson) anyday. Dysons are pure JUNK & last less than a year; TriStar CS will very likely last forever. A TriStar CS will pull a whopping 110" water lift (suction power) & a Dyson ("Diesoon") will only pull a 50" water lift.
Dyson loses suction power & airflow after each vacing session
So the TriStar always wins! Every day, every test. TRUE NO LOSS OF SUCTION & AIRFLOW WITH A TRISTAR!
The TriStar uses a bag & made of durable magnesium; & Diesoon is bagless & made of cheap plastic
Even a Kirby Sentria (OLDER Kirbys [pre-G Series like Sanitronic, 516, Classic 1CR, Heritage, etc] are FAR BETTER PERFORMERS than a Sentria) will outclean a Dyson
I wouldn't touch a Dyson at all.