There are many strengths and weaknesses for this stove. First of all, Simmerlite is just a deceptive name for this stove. MSR has long been reputed for being poor when it comes to simmer and that is why they released the Simmerlite. However, this stove is no different than the previous MSR stoves. It does nothing more than a medium to strong fire. It does not simmer well because if you lower the fire to weaker than medium, then the fire will go out, since there won't be enough fuel going into the stove. On the opposite hand though this stove is light, durable, portable and very hot! I would recommend it only if you need boiling water but not to make delicate sauces or pasta cooking.