Winter Camping in a Tent: Tent Heater??

[lredman]

So, I am planning to escape this weekend on a two or three night camping excursion with a buddy; we will be sleeping in my MEC Tarn 3 tent.

Tent Pic:
http://www.mec.ca/AST/ShopMEC/Tents/...arn-3-tent.jsp

I have never camped in the winter before with a regular tent, only a wall tent once that had a wood stove inside (sooo nice).

My question is, what is the best, cheapest, most reliable tent heater out there? Are there even safe heaters that may be used inside a tent? Would I be wasting my money buying one that is around $80 or so form Princess Auto?

Heater from Princess Auto:
http://www.princessauto.com/pal/prod...e-Buddy-Heater

Thanks,

Rogue