Mceljo, I didn't miss anything, and if you think the power available at your current wall outlet is adequate, then I agree with this recommendation,
It sounds as if you are looking for reasons NOT to try a power cord. I would say by all means then, don't try them. If you like what you have now, don't tread any further. Just listen to the music and be happy. Many folks wish that they HADN'T heard differences. LOL! This hobby is MUCH cheaper if you do not hear differences, or better yet, you don't even attempt to hear differences. LOL!!
You said the outlet itself might be an option, so why, all that is going to do is give you a better connection for the transfer of power. So think about this, what would be better if you had to plug the system in at your service panel?
1) 3,4,5 or more 14 gauge extension cords connected together to reach the system
2) A single 10 gauge extension cord to reach the system
Connections and distance are degrading to power transfer, and what has the greater potential for benefit with that upgraded power cord, 1 or 2?
I have had plenty of experience listening to systems before and after dedicated lines, one in particular that was even upgrading the actual dedicated lines. IMHO it is a very cost effective upgrade to achieve better sound when you are using quality equipment. Oh, but I forgot,
I'm not in this with the specific goal of improving the sound of my system, but rather to evaluate for myself the reality of sonic difference from a power cord with a secondary benefit of potentially improving my system.
Sorry, I just don't understand why anyone would have thoughts about spending additional money on a system, and not be looking to improve sound quality.
Nevertheless, good luck with whatever you decide.