I use a
Snow Peak LiteMax and it has been a great little stove. 1.9 ounces and it's valve system is very solid and smooth.
After about a 100 days of use though I need to tighten a small screw on it that has been working it's way loose.
I have tried the classic Jetboil cup stove and it boils water great but that is about all it does and is not worth the weight.