Interconnects for Bryston Power & Pre Amp

I am setting up a system that includes a Bryston 4BST amp with a Bryston B25 pre amp. I will be driving Wharfedale Evo 30's with this system. I will be using a Marantz CD player. I also have a Musical Fidelity tube buffer that I will try with the system. I will keep the tube buffer if there is a noticeable positive difference.

I need to obtain interconnects for the system. My plan is to use a balanced connection between the pre and power amp and RCA interconnects between the cd and the tube buffer. I have been looking at the Signal Cable products due to the positive reviews and the moderate price.

Does anyone have suggestions using the Signal Cable in this system or do you have any other suggestions. Please keep in mind I have a moderate budget for the interconnects at this time.

Thanks for your help.