I had recently received the mid-march batch of the Win (8750) and you'd find that I've come crying on many threads on this forum with all kinds of problems with my device.
Through this process, though, I seem to have also got a decent idea for the wider range of problems that the different iterations of the device have had.
While there have been issues with mine which have really put me off, I understand that these might not be deal breakers for others-- having to shut down after every use (because of the high-cpu usage bug in hibernate/sleep), not being able to charge the device when turned off (can be easily resolved after you install the older, unlocked BIOS), my 128 gb SD having I/O issues (which I worked around by using a 64 gb card and a sandisk 64 gb ultrafit drive) and so on...
These are major annoyances tbh, but if you can live with these and are okay with some tinkering, I'd recommend the newer batch of devices-- never had issues with graphics driver, wifi works as it should, no keyboard/ touchscreen/ game-controller issues and most games that I've thrown at it have worked well.