I have this one, picked it up at OSH a while back.
Lots of questionable reveiws, but mine seems OK -- especially for the price. Reality is do you need one? I can't say I have ever used mine with my TT, I don't carry it in my TT. When ever I need hitch work I hand tighten with a breaker bar then head to the Tire Shop in town and they torch it tight with the pneumatice wrenches they have as a courtesy. This wrench only goes to 150 LBS and the hitch needs more than that, so it really wouldn't be useful for that.
If you are thinking about having to change a tire, I still wouldn't worry to much. Again hand tighten with the Lug Wrench and then when possible again I go to the tire shop.
Where on the Central Coast are you headed?