I have the three dog and have been very happy with it, but I have no experience at all with the others. It does exactly what it is supposed to do and is built to last a lifetime. The guy seems to really know his stuff and it has all of the options that I needed. I have the two side trays which are great for cooking but unnecessary if you don't cook. I would absolutely buy another one again.
If you aren't packing it in, I would not buy a lightweight stove as you would be sacrificing performance. the middle one is also the round style which seems like it won't hold as much wood. If you want to stay warm at night, buy the one that is large and heavy. I stuff in every piece I can physically fit before going to bed at night. From the three you linked to, the 3dog seems to be the best fit for your needs.