I have the silk'n sensepil xl 65 something. I have been using it for almost 5 months. The results seem pretty good actually. I don't expect them to be permanent though.
My body is pretty hairless except for fine white hairs. The exceptions are my back which I haven't been persistent at. I have no partner and it's rather difficult to do. And, I stopped using it on my face because e3000 people say not to have laser for 3 months prior to their electrolysis. I am not necessarily going there, but I plan to have electrolysis on my face.
What I mean by pretty hairless is that there are little patches of dark hair regrowth on my legs, arms, breast and stomach. So, instead of something like 100 flashes as I was doing at first, to cover my body, it is now like 20.
The areas with no hair on my legs still have dots that I assume are hair dormant or empty hair follicles.
I can't tell if hair has reduced in my pubic area. But, I didn't decide to do that area until a month ago or so.
Anyway, for now, it seems like it is worth doing to reduce how much needs to be treated with electrolysis as other people are speculating about here.
One thing to be careful with is that I got little burns all over my body when I first set it to the highest setting. They have gone away. But, since then I use an ice pack to cool the area first, then flash and if it is still hot after the flash put the ice pack there again. As a result, I have used the highest setting everywhere since then and not had burns.