I assume that a titanium grill would outlast a steel grill given it's heat tolerance properties. I sure would like to find one.
After looking at small wood burning stoves for a while I decided I would rather have an open fire with a grill for cooking for several reasons.
I first tried a Coghlans Folding Pack Grill (Weight: ~ 375 grams) which worked, but I really did not like the folding style. It does not allow much in the way of adjusting the height of the grill and does not lock open, so is prone to folding and spilling your food if you are not careful.
I next tried a Coghlan's Tri-Pod Grill without the tripod. Just the grill and part of the the chain attached to a rope I suspend from an overhanging tree branch. It works well but at 18" and almost a pound it is much more than I need.
I then made a similar hanging grill using the grill from a cheap ($15.00) walmart charcoal stove and a little small chain from Lowes. The grill is 11" in diameter and the whole thing (chain, grill, rope, homemade bag, and a stake) weighs about 5 oz. I use the stake to tie the end of the rope to at the ground for convenience. The bag is essential as any grill becomes rather dirty.
I find the hanging grill system very convenient in terms of stability, and being able to adjust grill height. I also like being able to cook meat directly over the fire. Compared to wood burning backpacking stoves it is not limited by the size of wood used and has more room for cooking several things at once. On the other hand it does leave a burn spot on the soil. I guess I could add a floor like those used with the Ti-Tri system. Depending on where I am, I usually don't feel to bad about leaving burnt spots.
I have never had a hard time quickly finding a suitable branch for hanging it. Some people may also criticize having a fire near a tree. This does not seem like a system that could sell commercially, but it's what I use and I really like it.