Looking for a good coupler lock

[TxCowboy]

Been poking around Amazon and a few other sites but not liking the reviews many of the coupler locks are receiving.

Anyone have a recommendation for a good 2 5/16 coupler lock?

[woodwalker]

I use a master ball hich lock on my bike trailer. It is heavy duty and does not have the brass insert where you put the key in so is harder to drill out.

[MartyinSC]

I use this 3-piece combo, which I bought for a lower price at Lowes: Model No. 3794DAT | Master Lock

[Hoov7]

I like the bolt locks that are keyed to your truck key, BOLT Trailer Hitch Receiver Lock for 2" and 2-1/2" Hitches - Codes to GM Center Cut Key Bolt Locks BL7023582