I enjoy tweaking, too
One of the concerns I had with my 141 was that mounting it over the fireplace required a 15' power cord. It was that or do some extensive in-wall wiring to locate an outlet behind the display. That was not worth the effort.
I'm an electrical engineer by schooling and just don't buy into the power cord hype. The internal house wiring is 14 gauge. So, I used a stock 14 gauge power cord, from my power conditioner/surge suppressor (yes, a good one of these can make a difference, where as a "cord" cannot) to the 141.
All my gear is powered from this conditioner, which has high current response, so peak draws don't lag. I have instrumented this.
Science proves to me that the best way to provide clean, reliable power to our audio/video gear is to spend big money on that device. A "power cord", no matter how it may be constructed is just an extension of the electrical path that it is connected to.
Anyway, we'll probably find folks on both sides of this discussion and this isn't the place for that discussion. But, my advice on the subject is to research some top-end power conditioners and see what they can do for providing clean, transient-free, stable voltage, high-current power to your gear
In the mean time, I think I have another night with the S&M disc, playing with sharpness settings on my 141