Of the choices you've got listed, the UCO lantern would be your best/safest bet, the flame is totally enclosed, ya don't want to burn the tent down around you (just my oppinion). UCO also makes a three candle version called the Candelier that is GREAT, more heat, more light, and the flat top makes a really good stove/warmer too (yes, I've got one that I'm very happy with), the only down side is that it's not collapsible like the single candle model, but I still like mine A LOT. The only way you're gonna find a better/safer solution is to spend a LOT more money, i.e. marine alcohol stove/heater combination.

Troy