Based on your first statement, then the SP4 is out as well. If you cannot tolerate bugs, then stay away from microsoft. As brilliant as i find the surface line, and have 3 of them, it would be a lie if i said they were not riddled with bugs (some people are lucky, others are not). Most are very minor, but some can prove very disruptive.I won't tolerate bugs to be honest...if there are hiccups within the first week or two it will be going back to MS. I'm starting a new position and the last thing I will need is an unreliable machine.
If anyone cares to argue for just going with the SP4, I'm all ears.
Regarding bugs though, a large number of them are because of windows 10, so you will be hard pressed to find any windows 10 device that is bug free. I've recently encountered BSOD's simply trying to snap 2 programs side by side.