Dinamix

Something beefy like the Scythe Fuma? That's under $50 USD right now. Not sure if it's available where you are.

First off, don’t get a Hyper 212 EVO for the 9700K. It’s not made to cool CPUs like that. 
In any case, I think I’d get the 9700K if you’re mainly gaming. 

Please no.
 
I use the upgraded version 212X with a locked i7 8700 at 4.45ghz and it already runs with peaks on the mid 70c's to nearly 80c's at FULL load, having great air flow so I don't personally think you should cheap THAT much on cooling the 9700K

look up some of the 9700k  around 1.35w-1.4v, i've seen anywhere from 5.2-5.4ghz with the right cooling, it's pretty insane, this option is for gaming only; or you could just get a 2600 and upgrade to zen 2 next year for about the same price, i dont recommend a 2700x atm (zen 2/9700k will blow it out of the water if you need the frames). I actually think the 9700k is the choice here for gaming only.

I would say intel, UNLESS your projects really are massive. If you're say, compiling a monolithic kernel for an OS (or a whole OS), an app as big as a microsoft office product, or a 3D game, then maybe consider the better mutlithreaded performance on ryzen. 

However, at the same time, I am also an advocate of using something like say, TravisCI (free for open source github projects) or some other remote build server to do this stuff for you. Don't bog down your PC with that stuff. I run my own server. You could too, or use a free tool like TravisCI, set up a free-tier AWS/GCP node to do it, or pay for a better one... If you're working with a team get everyone to pitch in for a proper CI solution... 

So if you can do any of those things, then probably intel. If not, and you are compiling huge stuff enough that it would be a legitimately better experience, go AMD