It depends on what you want it for. There are a whole load of threads about Jetboils on this site and Outdoor magic, and some on the Brukit V jetboil, etc. Jetboils seem to be good if you want to boil water quickly, use dried food, soups, etc. They are compact and efficient. The Brukit is based on the Fire Maple system, which uses a heat exchanger as well, and again, is aimed at people looking for a compact one pot solution.
The Kuro is a Ti version of a Fire Maple 118 (which you can get from Karrimor for £17 plus shipping in its rebadged version - which is what I've got. Buy it online - cheaper and you dont have to go to the shop). Its pretty stable, it uses a canister away from the stove (Brukits, etc have had some problems with the screw fitting on some canisters), and of course you can use whatever cooking pot etc you like. Want more than one pot? Easy on the Kuro or similar. The piezo is useful, but frankly, its not the end of the world if its not got one - they can often stop working anyway, and we all carry lighters or seperate pizeo lighters anyway.
The 118 packs down very small, so is easy to put in a pot, with a canister, cutlery, cloth, etc. You could certainly get the whole thing inside their very decent Alipots with no problem at all, which would also give you two pots plus lids/frypans as well. or perhaps the BruPot (if its wide enough to support it), so you get the heat exchanger as well. Certainly much handier for more than one person or if you want to cook using an extra pot, etc.
Its horses for courses. Both have their advantages, and are not that much difference in price, weight or size overall, depending on what pot, etc your using. Alpkit do good kit (OK, so they sent me some stuff gratis, so I'm biased!), and they are by Fire Maple, which have a good reputation.