What golds do you have so far? :/
If you've only got 3 or so, than I'd definitely say to go for Premier Relic, it's more cost efficient and
it's honestly not worth going after character relics because of the abysmal probability that you'll get what you wanted. If you're feeling lucky and want only Valentines, then go for Character. It's really up to you. But for the highest chance to get ANY variant of golds go Premier
I currently have Rainbow Blight-Double, Bloodbath-Eliza, Last Hope-Valentine, Raw Nerv-Painwheel, Primed-Parasoul, and Buzzkill-Painwheel.
And I’m 1 silver away from getting the gold relic