I love my Trangia, but it is important to realize that there are different versions. This seems to be the older heavier series, rather than the new UL one. Also, you have a choice of an ordinary aluminium surface, or a hard anodized surface, which last longer, is easier to clean, and does not stick nearly so much (for even better non stick you can opt for the heavier nonstick frying pan, of course). I think a ketle is superfluous. I reality, the Trangia 27 is a solo stove, and the Trangia 25 a stove for two. The pots and pan that come with it have much better heat dispersal characteristics than titanium pots, and the UL ones are about as light, at 80 grams each for the 27 pots and frying pan.
The Caldera Cone is in a different league, It is much lighter, but far less suitable for frying. It is system to heat prepacked meals for those who take their prepared food with them on relatively short mountain treks, as many Americans do. If you are cycling in Europe, you want to be able to cook fresh food, and that involves frying fish, meat etc. I know of no better stove for that than the Trangia, and fuel is easy to get, but it is a bit heavier. I wish they would shave another 100-150 grams off it, by using titanium for the pot supports, the burner (like the new Evernew burner, but with a lid) and the gripper. The Clikstand is another example of an excellent integrated stove, and it falls somewhere in between the Trangia and the Caldera cone, both in weight and in usability.
The other Trangia like stove they advertise is a Chinese version of a stove once made by Optimus. This version is relatively heavy and not very nicely made, but it has some interesting design features. I once bought one but returned it, both because of the weight and because of the shoddy quality. But for 10 pounds it is a bargain for a stove for two.
Willem