I've tried silver several times and always found it overly bright. I also seem to be more sensitive to high freqs as I grow older.
Anyway, I originally wired the signal section of the 45 amp with 24ga soft silver from Handmade. Too bright. Then 20ga Vampire magnet copper with the urethane coating; better but the mids got murky. Finally, 26ga. XLO solid core copper with teflon from M. Percy. Aaaaah, just right.
It's all I use now for signal, comes in purple and white.
Killer power supply wire I just discovered is teflon covered tinned-copper multi-strand 22ga. Fits terminals, through holes and just beefy enough to bend and stay put. Also from Handmade; lotsa colors and cheap.