Audio experts love wires. I have a company that makes high end 1/4" and XLR cables for record engineering (I went to school for sound engineering). A good cable is worth it's weight in gold.
Don't buy monster, that shit sucks, it's a fucking scam. Low quality shit. The truth is there are a lot of options out there but if you're serious it'll cost you.
if you need any help selecting speakers / receivers im sure we can help with that.
I love:
Axiom Speakers: AxiomAudio.com Great quality stuff, very flat to allow a true neutral experience without coloring. Great for music as well, flat speakers have superb clarity, thats why studio monitors are as flat as possible.
Denon Receivers: if you're really serious id suggest the Denon AVR-2809CI,
http://www.usa.denon.com/ProductDetails/4484.asp it's a top quality unit with great sound, suburb midrange and low end response and nice clear highs that don't sound brittle and thin / tinny.
But thats if you wanna blow about $1500 on speakers (For the low end ones) and $1200 for a receiver. Not everybody does.