Higher end value cables

That is, in the price range I talked about

Ah.  Sorry I misread your post.  So, just for reference and now that we know what you're looking for, what interconnects and speaker cables are you currently using?   It just helps to know what your current reference is to help make better recommendations. 

That said, in my experience you're looking for a tough combination of traits at that price point.  Off the top of my head and if I'm you, I'd demo some Morrow Audio MA2 interconnects and maybe also SP2 speaker cables.  You might be able to strike a deal with multiple cables as well and very low risk to demo on your system, which is invaluable.  I'd be surprised if you're disappointed, but if you try them make sure they're broken in before making any firm judgements.  Again, best of luck!

Thank you. Actually this is a brand new system for me and I need interconnects. I do however have tributaries speaker cables. I will look into these suggestions. It seems to me that for a tubey sound copper might be best, as I understand silver can brighten things up a bit

Great system!  Wells is at the top of my list if I ever feel the need for more power. 

If you use some components much more than others, it might be worth it to splurge on those connections (and skimp on the least used, at least temporarily).  Of course, if you're into DIY, then your budget will go much farther.

FWIW In MY system, I found entry-level Cardas to sound significantly better than Audioquest, Belden, Mogami & Wireworld, and not at all like what some reviews would have made me believe.  To me it's full, dynamic & detailed--the oft used term "laid-back" does not come to mind.

I'm not trying to suggest that it's therefore right for you, so much as it's definitely worth the time to try at least a few options out. Good luck!

Cerious Technologies Graphene Extreme is a great cable for the cost.
Check out my thread on the Cerious Technoligies cables.

ozzy