Imaged my VAIO S last week. I'll give win 10 a spin on it and see if their own utility software works. Driver wise, they will work well I suspect. Worst case scenario, I restore back to a win8.1 image and upgrade at a later date.
As for them being shit, meh. Too subjective. There are too many shitty laptops out there from all of the major players. Sony was by no means the worst - at least from the two specific S & Z models I've had.
Yeah, I've got a black VAIO S15 that was a pretty damned solid device when I bought it in 2012. Bright 15" 1080p IPS display, Ivy Bridge, USB 3.0, GT640 (that could be flashed to 650M specs for a nice bump in 3D performance), decent backlit keyboard, and a sub-5 pound magnesium alloy chassis with a durable finish all in an understated package. For about $1200 at the time I bought it. Did my own upgrade to a Corsair 512GB SSD the day I bought it.
Samsung's competing 15" model had a TN display, Dell's was cheap-looking and had a lesser GPU, Lenovo was considerably more expensive, Asus didn't have the GPU or display (and my previous 2 Asus laptops shit the bed and had QC issues galore), and I'd take a beating before I'd give any money to Cupertino.
I've abused mine a lot, traveled all over the world with it, still looks almost new, and I'm glad I made the choice over three years later. I even have the original 1TB HDD in a portable USB 3.0 chassis that gets a lot of use.
Still even using the original battery pack with no noticeable battery life loss. Taking advantage of the 80% charge feature in the VAIO software when not travelling helped, I'm sure.
TLR: It's the first laptop out of the dozen or so I've bought that I didn't feel the need to replace in a year. I probably will go with a touch screen convertible when the 2016 models roll out, and would have considered another VAIO if Sony still owned the company. Four years after I bought the VAIO.
That said, mine was a Win7 device out of the box, with a free upgrade to Win8 due to when I bought it. The "upgrade" move to Win8 was not smooth, some core VAIO functionality didn't work for months (power modes and FN keys specifically) after the Win8 launch as Sony took their sweet time getting it ready for upgrade users. Ended up having to do a clean install to get everything working properly.