Is is worthwhile to vac??

I was cleaning a fabric suite and was about to use my Home-Tek Hunter 700w hand held rotary brush vac.
As I started the client informed me he had vacd the suite- but i said I prefer to do it again.
The client was amazed at what I collected

- and it wasnt loose stuff they had missed - this was dirt stuff from within the fabric.
While I was still there they were on the internet looking for the Home-Tek Hunter to buy.
As to what vac do carpet cleaners use?
For work I have a Sebo BS36
and for home have just got a Sebo Felix.
Probably the same motors (2) in each but the Fekix has a slightly narrower head as well as different physical features.
Maybe because its brand new - but the suction especially on the pull stroke is amazing.
This week have been looking after neighbours cats - 4 of them - and daily been using their vac to clean up cat litter debri. Used their Dyson - sorry dont know what model - and not a patch on the BS36 and definately not on the Felix.
And the 2 Sebos will still be going many year after the Dyson has been binned IMO.
