Hello, if you can afford the RTX 2060, then just go for this GPU..
But, if you won't be playing Games which have real time ray-tracing and DLSS support, then that extra money paid for the Turing Architecture/RT/TENSOR cores would be getting wasted (well, sort of...). Then go for the GTX variant.
Is Streaming your main goal, or you even play graphic demanding game titles ? What are your full PC specs ? Are you on 2K or 4K ? Nonetheless, the latest GEN arch is Turing from NVIDIA, so it would be better to invest in the Turing GTX/RTX cards, rather than buying a 10 series Video card, IMO.
Even though ray tracing is in it's infancy stage, as of now, slowly and slowly the RTX cards are going to perform better within the next few years, when DLSS and Ray tracing effects are enabled and turned ON. So when viewed from this perspective, the money spent is going to get utilized....
EDIT: I just wanted to add this part as well.
Just go for the RTX 2060 instead. Even I'm looking for an upgrade from my RX 480 GPU....I'm waiting for NAVI to arrive, or some other next-gen video card. I'm still on 1080p though.....
Anyways, when it comes to NVIDIA, it seems we are basically paying an "early adopter" price for this new Turing tech/hardware, hence the premium. I know Nvidia has totally changed the GPU arch as well, with the addition of new RT and Tensor Cores, and other design/pipeline improvements (memory/cache) etc.
But to take proper advantage of this hardware, very few games and software are currently out in the market. So basically the hardware won't get fully utilized (if we think from this perspective). Also, how well some of the upcoming Games will actually perform on a TURING GPU, with Real time ray tracing and DLSS, still remains to be seen. I think it will take at least another 2-3 years for this whole RTX technology to become mainstream.
As of now, few PC titles are going to take full advantage of this new RTX feature, provided Game developers also adopt and implement ray tracing, and DLSS deep learning AA in games as well.
Still, it's good to see new Tech being released. With time things might settle down a bit, and the performance gain might be there when DLSS and Ray Tracing features are enabled.