Need speaker cable

I have the 1.7i's too and I use the Cardas Parsec, works great.

Tchernov Cable go for classic line!

Analysis plus oval 9’s can be had for your budget and they are pretty sweet.

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..