Need speaker cable

1.  Buy used if you can.  Speaker wire doesn't degrade. You'll likely want to upgrade again so buy a well known brand with good resale value.  

Here are some of the best within your budget. 

AudioQuest Rocket 11
AudioQuest Type 8  "No Frills" (it comes in a plastic bag)
Kimber Kable 8TC - most expensive of the bunch but compatible with the best of the best
Kimber Kable 4TC 

First , try different  speakercables and compare. Let your ears speak.
in some equipment, silver can be to shrill. For me, the best way is a copper 99,99%, in your situation..

Long shot but try Robertson Audio Cables from Australia.You can't go wrong. GREAT CABLES LITTLE BUCKS.
robertsonaudiocables.com.au
Tony Osicka
From Oz

I would recommend QED SIGNATURE Genesis Silver Spiral. They are a little expensive when new, but you could get them for about $600 used for a pair.
https://www.qed.co.uk/qed-genesis-silver-spiral-cable.html

just did some research on the Canare 4S11.   Looks in nearly every detail to be a Japanese knock off of Audioquest type 4.   I'd pay the extra for Audioquest.  quality control unbeatable.