Depends on your system sound / components / tastes.
I would make my choices from: Transparent, Cardas, WireWorld, AudioQuest and DH Labs. All, highly respected and well reviewed. It would be best to those three brands based on research, then compare them.
I use Transparent… but have owned all of the above. DH Labs for me is the best of the budget brands. Nordost at their high end are fantastic… but above your budget.