best broker for options on futures

[unispec]

Since NT does not support options on futures, who do you use for a discount broker that has a variety of instruments and you can trade your own options on futures account? Options on futures can help when your just a futures day trader, for you can stay in the game with an option without the risk of holding a futures position. In fact you can hold for instance a long futures position by purchasing a put. I have an account with TD Ameritrade but they don't even offer options for silver or gold.