Upgrading

@malbor 

Without knowing your equipment, we have no idea what to suggest and just because something is old , doesn’t make it bad or obsolete.

Shunyata is my go-to for power cords. Not sure about your system or budget, but if you buy used I'd recommend CX series or better. 

@malbor 

You don't have to listen to JasonBourne's spiel. He spouts the same negative attitude on every thread.

+1 ghdprentice for letting us know what is in your system. 

Agree with most that power cords is where I’d start, but it depends on the quality of the components. If your components use quality power supplies and your line isn’t that dirty (or you are using a quality power conditioner or regenerator) then power cables are the best investment. Otherwise, speaker or interconnects would be where I would focus. 

tweak1 I'm surprised you haven't been pilloried for positive comments re Chinese clone cables on this site. I too tried Odin 2 and Cardas Clear Light cables and had the same reaction as you, great value cables beating anything I had  heard costing. 20 x the price. I even took the Cardas cables to a dealer friend and we tested them against the real thing, neither of us could tell the difference and neither could any of his sales staff. I would have liked  to do the same with the Odin 2s but don't know anyone who can afford the real thing.