best RCA interconnects under $150

I have a Mccormack DNA-1 amp connected to a TAD 150 signature pre-amp with Sound Silver Trilogy interconnects made by Stewart prior. I am using Oyaida PS2 to connect my Jolida 100A cdp.

I am looking to improve the sonics, large soundstage, silky mids, airy highs, and accurate bass. I am hoping to upgrade the interconnects towards this sonic character, your recommendations are welcomed.....

Thanks