Power cords make a huge difference depending on your system. If you have a all in one Radio Shack system chances are you won’t here a difference. If you have a system that is revealing then they will.
That being said I would go with the Shunyata Venom NR series. They are the best bang for the buck. You don’t have to replace all at once. If your budget is $1000 then you have enough for 3 PC’s. I would put them on the amps and preamp. When budget allows then replace one at a time. It’s much better than spending $150 a PC and not getting anywhere near the performance of the Shunyata Venoms.
That being said I would go with the Shunyata Venom NR series. They are the best bang for the buck. You don’t have to replace all at once. If your budget is $1000 then you have enough for 3 PC’s. I would put them on the amps and preamp. When budget allows then replace one at a time. It’s much better than spending $150 a PC and not getting anywhere near the performance of the Shunyata Venoms.