Im going to regret my cable question

The Rockets are fine. I upgraded from the 33 to the 44 in one of my systems at some point, not a huge difference but I did hear a little improvement. Later swapped around some Morrow SP-5, Straightwire Symphony, Kimber 8TC, which all felt roughly the same caliber even if some are more expensive. They all had different strengths with none taking a clear lead over the others.

I like Audience a lot, their better models are a little pricey but buying used can bring them down to a more realistic price level. I also really like Zonotone from Japan, you don't hear much about them around here though.

I just ordered speaker cables from a company I had never heard of before called Veritas Cables. I have their Aperta Special Edition speaker cables on the way now, hoping they remind me of Zonotone since they have some design similarities. 

My experience is you just need to try a bunch and see what you like best. That really is the best way to go.

Well, I took a look at the other site where there is a lot of equipment for sale.

There are two cables that might be worth considering. Both are about 15 years old, though. Both cost about 600 USD, I would try and take the price down by at least 15%. Both are 2.5 meters long.

1. Audience AU24.

2. Purist Audio Aqueous 20th Annivessary.

I have original Purist Audio Colossus fluid speaker cables. They are probably at least 30 years old, they sound excellent, and I have not upgraded speaker cables for 25 years ! I have upgraded RCA interconnects five or six times during 25 years.

Guessing you may want to warm up the sound a touch if so look for some used Auditorium 23 cables they should be within your budget and sound great.

I I had used both Rocket 88 and some custom made Mogami cables, the former being about 15 yers old.  I then tried a set of 4 ft Silversmith Audio Fidelium cables, and it was instant transformation of my system to higher level of sound quality.  So much so that my non-audiophile but music-loving wife commented on the improvement, and when my Shetland Sheepdog barks at the music, he barks either between the speakers or off to the sides of the speakers, not at the speakers themselves.  Eyes open or closed, the music emanates from the space around and behind the speakers.  I did not think speaker cables could make such a difference, but I now know that they can.  Depending on the length you need, they should be only slightly above your budget … but well worth it.  The owner, Jeffrey Smith, is very responsive and offers a 30-day trial period … but it took me only 30 seconds to decide the cables are “keepers,” and the sound improved even beyond that.  

Since you have a Graham Slee phono stage, have you considered demo’ing their Spatia speaker cables?   I did and ended up buying them.  They’re musical while still being transparent.  I feel like they made my system really sing.  The price is very reasonable and you try their free U.S. loaner program ( you only have to pay shipping to/from Kentucky, where their US loaner program is based).  Worth a try.  At worst you’ll be out $40 for shipping.