I got mine as a refurb from woot so I didn't have the option- but the microsoft tax is not all that big relative to the cost of the laptop, I think that you might save $50- if you're buying a $2000 laptop, that may be in the noise. I decided that there are some times that I may need windows (sometimes you can't get around it), so I decided to get another mSATA drive, and I'll just swap the whole drive when I need to go Microsoft.
I do like it- especially the screen- it's beautiful. I tried an XPS13- the combination of limited memory (8G, soldered down, so not expandable) and a 13" UHD screen made it not as desirable. Still beautiful, but there are enough programs out there that do not scale text size, It is a 13" laptop and a 13" screen, especially for development, it is still awfully small. The precision also has a more USB ports- while thicker and heavier, it is still a better option for development.