Don't spend any money on cables right now.
I'd focus on speaker placement, and room acoustics. See GIK Acousutics website.
Find the manual to your speakers and follow the instructions carefully about ideal placement.
Listen for the instruments being able to transition smoothly from L to R without gaps. Leave enough space to the outside of the speakers so you don't have early reflections. Throw carpets/throw rugs around the floor between and behind them and listen again.
That's where you should start.
I'd focus on speaker placement, and room acoustics. See GIK Acousutics website.
Find the manual to your speakers and follow the instructions carefully about ideal placement.
Listen for the instruments being able to transition smoothly from L to R without gaps. Leave enough space to the outside of the speakers so you don't have early reflections. Throw carpets/throw rugs around the floor between and behind them and listen again.
That's where you should start.