Using 2 different brands of interconnects?

Between my analog and digital cables I have products from 8 different companies, with 2 different "series" from Kimber.
Everything has it's own sound. So it's not an issues and probably better to mix and match.  See (hear) what sounds best with individual components. I don't think there is a one size fits all brand of anything out there.Also the law of diminishing returns. There is a point were you are paying for a difference that only your dog or a bat is going to notice.
I have many "value" cables that sound great and some expensive ones that sound really great, and have returned some expensive ones that didn't cut it.
Didn't mean they were no good, just not the right fit for the component/ system. I have gotten to the point now where I'm happy with my choices.
Fine tuning the sound is part of the process and can be fun and not necessarily expensive.

"Under $100.00  sounds like cheap cable pretend it sounds good."
The OP, who obviously doesn't have the type of disposable income as some members here, asks for help with a legitimate question. What he gets is a pompous, snotty comment meant to demean him instead of provide help.
Can you imagine raising children with this type of attitude.

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.