Clock vs Streamer advice

Hi,

My current system is/was

Aurender N100H>Bricasti MC1>ARC Ref6 Pre>PS BHK 300 monos>B&W 803 D3

I sold the Aurender to try a different streamer and am temporarily using a MacBook to run Roon straight the the DAC through USB. I currently don’t have a huge budget. I emailed a local shop that has a used Melco N1Z to demo at home. I am going to try it out. I also want to try the Bricasti M5 streamer to see if there is synergy with my DAC.

I also came across the Mutec MC3+USB and Mutec Ref10 Nano combination in a similar price point, but I won’t be able to demo this.

If I have to pick between using a mac>Multec MC3+USB and Ref10 Nano>dac and the Melco>DAC option, which do you think will improve sound more. I’m still pretty new to this hobby and can’t currently afford the Melco and Multec combo.