Quality IEC connectors?

Yeah, generally no reason to go through the nut roll of swapping that out. Plus, it WOULD degrade the value as you would have to mention it was done. To that, check Parts Connexion or VHAudio for Furutech and other IECs if you are hell bent.

I wouldn’t do it but if you must, Furutech has a wide range of products from inexpensive all the way to insane. 

My two bits worth: buy any half decent connector and spend what‘s left on Acoustic Revive‘s ECI-50. The impact of the contact enhancer applied to all signal and electrical connections far exceeds what you get from better terminations