@ufguy73 - I've done a listen to the complete lineup up of DCS products. They all build on each other. Each step up is an obvious improvement in sonic quality and soundstage. However, I think you need the matching system to get the best out of them.
I've a Audio Research Ref 3LE, VT80SE, Linn DSM with upgraded DAC & Wilson Sophia 3's. I think the Bartok would provide an improvement in overall quality vs the Linn. Not sure I'd do justice to the Vivaldi without an upgrade in the Pre and power amps.
But it also depends what else you want to do with your system. Linn has greater options as far as connectivity that the DCS Bartok. I only stream and occasionally hook up my TV to the Linn for the occasional movie. If you want to add a turntable, TV, CD etc. then I'd look at Linn as an option over the DCS Bartok. If you are just into streaming and have the rest of the system the DCS Bartok is great.