Spkr, interconects, or power cable upgrade first?

Seems like mixed opinions so far. I can only cite my experience which was: replaced speaker cables first, then interconnects and finally power cables. I too was using Monster cables for speakers. They'd developed quite a bit of oxidation over many years. Went with JPS Labs for all cables (speakers and inteconnects). Some purchased used. Built a DIY power cord for my CD player (go on-line to Parts Express for instructions). Bought a MyAudioCable (MAC) powercord for my integrated amp. Along the pricing continuum for this stuff all the above are definitely to the lower cost end but good value options - at least in my opinion. For me changing out the speaker cables made the biggest improvement.

Not arguing with those advocating addressing power cords first. I do suspect benefits of the change will depend on which (PC, IC, SP) is the "weakest link" in the chain...that is, which is doing the most to limit or degrade signal generation or transfer. In my case, I doubt I'd have heard an improvement had I changed power cords prior to addressing speaker cables given their oxidized state. Maybe the generic answer is to change out that piece first that is furthest away from "state of the art" - or maybe make that furthest away from "best of the art" available with a specific budget.