Time to upgrade or no

The different cord might be an upgrade. Hard to say.          
I use Pangea power cords. I found the Pangea AC14XL to be worthwhile upgrade for my amp even though it is only 14 gauge, over the previous Pangea AC9SE mkII Signature.         
Right now the Pangea XL are on sale too. About 20% off the usual price.(they have been on sale for a few months already.. so no rush needed.)

What is your budget for a PC? I can’t speak to the Morrow cable, but at this price point the Pangea AC14XL is very good (I own one) and more revealing than the AC-9 variants. Once you move up to the next level in price and performance, you really start to hear the difference in SQ. A better sense of realism, increased detail, micro-dynamics, and imaging are presented. Also, the differences in sonic signature between manufacturers is easily realised. Audience, Furutech, Shunyata, Tara Labs, just to name a few, offer a significant upgrade in sonics and are  available used in the classifieds.

Morrow is worth a try; I believe they offer a trial period.
In addition to Pangea, at the budget level of good aftermarket cables are Cullen and Signal Cables which offer return policies. Plus, Wireworld offers some affordable cables that IMO are vastly superior.

Looking at around $200 
i have a b&k 7 channel that I use for ht that I'm going to move the ac9 on that amp.lookin for the best cable for the price and sound.
The ac9 is like a tow cable and it's so heavy to plug in on a stand of any height.

If you have some vertical thing. like the support tube of the stand... You can zip tie the Pangea to the stand, say halfway down. just above a shelf.. . The zip tie supports the weight of the heavy cord. so then the IEC can just stay in place. I zip tie ALL my AC cords to the screen in the center back of my component stand.

Please explain; what is the power rating of the 2 channel amp and also the 7 channel. This info will help find a matching PC for each amp.