Dave,
If you are caught up with all the websites and research that everyone has offered you, I have yet another site and stove for you to look at. It's the  www.TitaniumGoat.com  website which has a light, packable cylinder stove.  Hopefully one of these will work for ya.
Bill

Panther Primitives have them.:www.pantherprimitives.com They have 2 differant style.The one comes in 3 sizes,the other in 1 size.

I have a heat buddy heater and they work great, when we have ice storms in keeping part of the house warm with a window cracked I always figured one or two of those propane heaters would be the trick if I was in the mountains of VA in a 12X12 tent, just make sure you have some air flow to avoid CO poisoning.  You can get adapters to use them from larger tanks.

Dave,
I happen to work for one of the companies mentioned above, feel free to PM me if you want to discuss stove options.

I built this stove out of a 20 gallon Barrel for about $120.00 with the help from all the guys here. My tent is 10x10 and it works extremely well. One other Idea is you can use a 30 gallon barrel and buy a kit a friend of mine has a 12x12 tent and he made a 30 gallon barrel stove and it works very well also I beleive the cost was around $75.00. Just be sure you burn the barrel before you use it in your tent.  

Thank you friends. I'll be sure to check out ALL your good tips. Dave

I use one of these in my 12x12 tent (the Alaskan model).   http://www.cabelas.com/cabelas/en/templates/product/standard-item.jsp?_DARGS=/cabelas/en/common/catalog/item-link.jsp_A&_DAV=&id=0005876513918a&navCount=2&podId=0005876&parentId=ca  t550002&masterpathid=&navAction=push&catalogCode=IJ&rid=&parentType=index&indexId=cat550002&hasJS=true
We burn duraflame logs and wood and it heats our tent well.  The duraflames are good for burning all night long and keeping the chill down.  When we are hanging out in the tent, wood is better for really stoking it up.  Since it's a riveted stove, we had to use high-temp silicone on all the seams since it drew too much air and went through wood way too fast.  Since sealing it, it has worked very well and much more efficiently.  I love my wall tent!!!

I just took delivery of a military M1950 Yukon stove (front load model) and I have also used the military M1949 model stoves (top load), both will burn multiple fuels and heat very well.  Mine came with the liquid fuel burner option which can use gas and white gas according to the instructions.  I tried it out burning wood in a military GP Small tent with the winter liner and a wood platform floor and it was a little more stove than I needed.  GP Small is a 17.5' x 17.5' canvas tent so not really something that you would pack in to a remote location without some form of transport and the stove doesnt collapse so again not all that suitable for packing in.

I know these stoves are dependable and versatile and for $100.00 they are a bargain compared to a lot of the stoves I looked at before making my purchase.