A good pure copper, (6-9's, OFC) no insulation, or as close as you can get, (enameled/kapton) magnetic wire is about as good as it gets.
What gauge did you use. 12 in my opinion is minimum.
Then you left with the conundrum, to twist them together or widely space them.
At the price of OFC magnet wire, buy a spool and play with any configuration you can dream up, and still have less than a couple of cases of adult hoppy beverages invested.
What a way to fly.
I predict, that in the future, the sales of super expensive wire, will chill.
The fellow who started the mag wire craze is genius. I'm an idiot, I've been using them for years and failed to recognize the market potential. Dirt invested and even at $80/ pair which is 1000's of times mark up, it's still the best sounding and cheapest wire out there.
Also try the mag wire as inner connects.