I use a Furminator on Suki and Josie - but they are both short haired dogs! Yes, they are absolutely fantastic and do live up to the adverts!
However, you have to be careful as you could end up with bald spots (they really are that good!)
I was totally amazed by the results and both dogs love being "furminated!"
Would not use on Harriet because we show her, but TBH probably would otherwise.......