Trailer Hitch Lock Recommendations?

Anyone have any recommendations on a trailer hitch lock?  I just need something that will lock my T-Bar to my hitch to stop an opportunistic thief.

For the record...
1) Yes, I know that the locks can be defeated by a determined thief.
2) Yes, I know that most of the locks tend to be crap, which is why I'm asking for a recommendation for a decent one.
3) Yes, I realize the extra 5 minutes of disassembly and locking under my bedcover is probably the best way of securing my T-bar

So, like these...

I use the one on the bottom. Never been an issue

I use whatever's at home depot. The one in the pic at top. It works.

I had the one on the bottom.  Lost the key.  A lock smith buddy of mine showed me where to drill.  $10 for the bit at Home Depot and it was off in under 60 seconds. 

Just saying, a thief who knows what they are doing is gonna get a lock off in one hell of a hurry!! 

Now days, I do what CalTRANS does; they pull the wheel off when leaving a trailer.  You know those electronic signs along the road?  A jack stand and the tire off is about it. 

A stand is about $10 and mounts close to where the tire is I'm removing;

I used both styles; mostly depends on access space for the key, then I used the angled version....

I had the one on the bottom.  Lost the key.  A lock smith buddy of mine showed me where to drill.  $10 for the bit at Home Depot and it was off in under 60 seconds. 

Just saying, a thief who knows what they are doing is gonna get a lock off in one hell of a hurry!! 

Now days, I do what CalTRANS does; they pull the wheel off when leaving a trailer.  You know those electronic signs along the road?  A jack stand and the tire off is about it. 

A stand is about $10 and mounts close to where the tire is I'm removing;

Yeah, I know... nothing is going to stop a determined thief.  It's just a deterant for the wandering Tweekers that see something shiney and want to carry it away. 

Good tip on the trailer, but this is just for my T-bar. 

So the consensus seems to be, "F' it, just use what's at the store and keep key access in mind..."  That works for me.  Thanks guys!  That's why I love this forum.