when will headphonezone sales go on?

i currently use an opportunity enco buds 2, i kinda like it's thumpy bass, but I don't like too much bass like a subwoofer does.

shall I go for tangzu waner sg2 or kz thunder? i need type c and budget is 2-2.5k max

and will the tangzu waner sg2 type c restock anytime soon?