recommended speaker cables and interconnects

Buy used purist cables if you can find them. Not the Uber expensive line. They sound great but can add a little warmth if your system is on the brighter side. 

@stone1 

i completely agree with @gita .  Stick with one manufacturer throughout. In other words I would not mix and match manufacturers just because you might get a special deal on say an interconnects or speaker cables. Usually if you work with a dealer they will take whatever you buy back in on a trade to something higher up in the line. That is how I have worked up in my system. Started with blue heaven Nordost and now on tyre 2 and Vahalla . In my humble opinion the most improvement came on the power cable side of things. Also the power cable from the wall to a nice power supply like a Nordost QB8 or and Audioquest Niagra or something similar. My most expensive cable is the wall to my qb8. Also I did get a dedicated 20 amp line which cleaned things up as well.

I can recommend the new Decware power cable, and also the interconnects.

Fairly priced and a big improvement  

If your lucky enough to have a dealer near by, try and demo as many as possible in your system. I believe the Cable Company has a demo program.

try to find wires that are OCC single crystal that's the best wire for audio to use, far superior to anything OFC, check out companies like Harmonic technology acoustic Zen their prices are quite a bit cheaper than all the other companies selling OCC single crystal wire and stay away from MIT and transparent because those boxes screw everything up unless your speakers are exactly the right impedance for those wires and they're very overpriced as well.