whats the very best sounding cables for realistic money


hi,
can you all please tell me if there are a really special sounding cable out there for realistic money, ie power cables 300/400gbp, signal cables 1m 400/500gbp and speaker cables for around 600/700gbp, i know its still alot of money but there must be a manufacturer out there thats not pulling our trousers down, or spending time and money on R&D to solve problems that do not need addressing ie over the top shielding or some other marketing nonsense, the company i am showing interest in are Anti cables ??????????
mains
I was doing similar speaker research as the OP not long ago, and would like to add to something geoffkait said earlier regarding a specific speaker brand using common extension cord as speaker cable at a trade show.
Whilst doing the research, I stumbled across this site:
http://www.6moons.com/audioreviews/whitelightning/moonshine.html
I am not affiliated with this site nor is this an endorsement of it (they don't sell stuff, so this is no veiled sales pitch).
It seemed like a low-risk proposition, so I made up a set of cables for my system - which by no means is a high-level barn burner, but it sounds pretty damned decent to me.  I found some white cord that matched the spec (which looks, really, quite nice coming off the speakers and disappearing into the rack) and I did go with bare wire at the speaker terminal.  To provide some point of reference, my system consists of:

Denon AVR-X4000 (mid-level A/V receiver)
Hafler DH220 w/full Musical Concepts ugrade for front L/R
Magenpan MMG fronts
Adcom GFA6000 for center/surrounds
Paradigm Phantom v2 surrounds, Magnepan MMG-C center
Rhythmik FG12 (Audiogon classifieds find)
Denon DCD 1500 CD player
Akai GX-280D reel-to-reel
ADC Sound Shaper SS-325X (for reel)
Monoprice 22AWG interconnects across the board

As a self-taught guitar player (40+ years) and low-grade "audiophile", I consider myself to have a relatively "trained" ear.  I get "imaging", "soundstage","airy", "bloated", "boomy", etc.  And I'll be damned if these low-cost, extension cord speaker cables didn't add to an already good-sounding system.  I got expanded soundstage dimension, depth, clarity, tightened mid-bass.......it added a sparkle and sharpness that even my wife and son noticed after about 30 seconds of listening.  Would these speaker cables add anything to a high end system?  Can't say.  But if you've got the bread to burn on thousand-dollar cables, you certainly have it to burn on something such as these DIY-ers that could give you a really, really pleasant surprise.  I know I got one, and will be hard-pressed to re-visit the "which speaker cable?" conundrum ever again.
Hi Mains,
These are a bit outside the price range you were looking for. Hands down best cable for the money - you might want to check them out for the next time you get an itch. Just throwing in my $0.01 
www.tonarm.ch

All things being equal, white cords or cables always sound better than black or any other color. Don't believe me? Just use white electrical tape and apply to whatever cord or cable you're currently using.
I’ve compared my shorter (.5 meter) silver SP/DIF cable to a 1 meter version and found the above claim of 1 meter digital cables not working as well to be baseless. This may be in issue in theory, but at least in my attempt at testing it by actually listening to music, it’s simply nonsense. I really tried to test this theory once I heard it existed, switched the cables between a streamer and a CD transport back and forth over days…zero, and I mean zero difference. Maybe my modest DAC has astounding re-clocking abilities or something, but still…