Could some one explain how to buy best cables?

Start auditioning cables with return policies.You will eventually find the cable that suits your system ...and get an education in the process.Generally speaking and when working with a qualified dealer-once you tell them your likes/dislikes on a few cables,they should be able to steer you in the right direction.

You don't have to spend thousands to get good cables. Do a little research and deal with the direct order cable suppliers that have been in business a number of years. There are many good ones such as Pure Note, RSA, Silver Audio, etc.

I'm sure you will get plenty of recommendations full of anecdotal evidence speaking of detail, air, soundstage, etc.

However, I do not believe there has ever been a blind test where anyone could sonically differentiate a very expensive cable vs. a cheap cable beyond normal random chance.

Get some nicely made cables from www.bluejeanscable.com and you'll be fine.

If the desire is to have something a little more special, then have the cables made with the Belden teflon stuff. It'll add about $15 per pair.

If you have a ton of $$ that you're just dying to spend, there will be plenty of other recommendations coming...

Dare to be different.

Money rarely has anything to do with it, Nil.

Rather it appears to have everything to do with quality of parts, workmanship, and methodology.

For example, the Paul Speltz' Anti-ics at $100 for a 1 meter XLR pair blew away my pair of $3500 (retail) XLR ics making them sound veiled and bloated.

But then again my $700 ics are distictly better than the $100 ics as well as adding a bit of magic to the final presentation.

I think the main thing to listen for in any sc or ic is time-smear. You want as little time-smear as possible because time smear causes the highs to sound grainy and harsh and fatiguing and will corrupt the definition of the lower bass frequencies.

In my limited experience, excessive time-smear is a very common negative trait to find in scs and ics.

-IMO