If you need more high-end sparkle and sizzle, silver cables can be the way to go.
I’ve tried silver cables, but prefer copper in my system.
I can’t really recommend a "cheap" silver cable, but I would point you to usedcable . com and take a look at what they have in stock. (I like SR cables, but they’re not really what I would call "cheap".)
You’ll get a chance to try out some brand name cables in your system, and not break the bank.
If you don’t like them, you can always resell them. (I think they’ll let you return them with a restocking fee, if you so choose.)
In a revealing system, you will most certainly hear a difference. It can be rather profound, depending on the equipment used. You have to find what your system and your ears like.
Good luck.