Using 2 different brands of interconnects?

As with most things in life, I believe in getting the best that I can afford. Most folks don't have unlimited budgets. If someone can only afford $100 set of cables,that's the budget. There are plenty of choices in that range. My personal opinion,is buy used. That's what I do 99% of the time.  

What makes matters more complicated is that cable sounds different in different systems...depends what it connects. I had Cardas in my system which was recommended by my amp manufacturer, and it sounded awful. Colleen Cardas convinced me that their better cables would be more appropriate....ultimately tried their whole line....they all had a sound that I found unacceptable. I’m sure they sound great connected to different components....but that what this hobby is about.

Try any combo you want and go with whatever sounds best.  Cost is not the determining factor for what will sound best in each case. 

@stringreen My experience with Cardas products are that they are warm and if you have a hot, trebly system with noice, they can help hide it. The higher up the chain you go, the less warm, but if your system is balanced and quiet, then they obfuscate the details. For my early systems, that was exactly what I needed. Since then not so much.

It depends is always the right answer. But as my equipmemt got better and better I zeroed in on a brand that consistently performed the best for me (Transparent). I have always suspected that combining a warm interconnect and a cold / detailed one serially would act as a filter... so that in the limit it would be a bad idea. 
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Also, comparisons take time and after hundreds of hours of comparisons over decades... I really want to enjoy listening to music, not listening to my system. So, now I have a trusted brand that I know complements my equipment (ARC, Sonus Faber, and Transperant is a known compliment which I discovered independently) and and only requires a decision by me on how much to pay.