+1 to what @soix shared, i.e. "what sound characteristics are most important to you?"
@hausera If you have silver DIY speaker cables now, what about them do you not like, and what are you look for more of less of? Are they too bright for you, etc.
Looking at your tube choices makes me wonder if you might be looking for a bit more lush sound. If so, another option as a diy person might be to try some some really good copper bulk wire, if not certain. Having done this for many years with different types of bulk from Audioquest, Supra, Apature copper/silver, and Cardas copper offers decent Bulk 101 insulated wire for speakers. Then making the jump to well designed bi-wire speaker cables with better dielectrics and even better conductor wires made for a darker background can result. Even using lower grade connectors and low grade solder can change the sound in a normally transparent system. It can be fun to try and enjoy different outcomes from diy (trying again) -or-buying very well designed factory made speaker cables. Enjoy!