I've used and researched a lot of portable wood stoves. If you want a portable rocket stove, the one I would recommend is the Virestove. There are some video reviews on youtube that you can check out before buying it. I haven't used a more practical one yet. If you have the funds, they have it in titanium right now. Should be quite lighter than the stainless version. The mini version is more portable of course, but doesn't achieve the smokeless combustion that the larger version does. I guess it's the length of the chimney, but not sure.

For a flat pack grill that's practical and portable, I'd recommend you check out the ones made by UCO. They come in three sizes as of now. The only downside I find with flat pack style grills is that on most of them you have to raise the grill to add wood.

Somebody recommended the Firebox line. They're pretty awesome, but are regular wood stoves. They will smoke just like any fire pit or flat pack grill. No rocket smokeless combustion. The stainless version is very well built and will last forever. Haven't tried the titanium version, but seem to be well like by users. I'd also recommend the Bushbox, by Bushcraft Essentials. These towo are the best of the folding style portable wood stoves (not rocket style).

links to this stuff (some are available on amazon):

virestove.com

ucogear.com/portable-grills/

bushcraft-essentials.com/en/outdoor-stoves/

fireboxstove.com

I have to say though that I've been using wood stoves to cook less and less, mostly because of health concerns. It seems every year I find more and more reasons not to be around them.