I'm looking for an SSD disk for my operating system drive on my desktop machine. There seems to be a huge range of sizes and prices. I understand that the internal mapping between flash blocks and logical blocks makes a huge difference in responsiveness of the OS. This is particularly important for random small writes.
With this in mind, what is the fastest performing disk?
Realistically I'm looking at sub $1500/£1000/€1000, but I'd be willing to go higher if it turns out there is a huge difference.