recommended speaker cables and interconnects

I've read a lot of good reviews on Audio Envy. They have a 30 day return policy.

What components do you have and what do you think of the current sound quality?

I have had experience with MIT, Kimber, Monster and Audio Quest. You should be able to do much better. I will admit not being impressed with the lot.

Consider used. Typically they will sell at 1/2 the cost. Look here or at usedcables.

DH Labs, WireWorld, Cardas and Transparent are highly regarded dependable brands. If your equipment is not really high end, Cardas can be a really good choice… it tends to be a touch warm and detailed so it can really complement many systems. The advantage of not buying the “interconnect of the month” which everyone is raving about is products from established companies have a house sound. You can move up their product lines to get better performance without going through the huge effort of evaluating overall sound qualities again. 

When I had a much more modest system I used a lot of Cardas and now it is all Transparent… with an AudioQuest power cord on my amp.

+1 for Audio Envy.  You can't go wrong there, with trial period and return if necessary (unlikely).

thanks every one for the suggestion.
i will read carefully on each of them.
the problem with the "trial period", is that i'm not sure they will have it in my country.
and not all brands are available here.
i planed to buy those in the usa, that i'm planning to visit on june.
but i will check here as well.

I have done  very well with Audio Envy . better  than stuff  twice as  much .