New shifters: is Acera SL-M360 a good buy and how much better is SL-M310?
Acera is on the lower end of Shimano's line of components for hybrids and other bikes that aren't going to see an exceptional amount of stress. They fit that bill relatively well, but being built mainly of plastic they do have a tendency to wear out over time. Having said that, it's probably the best deal you're going to get in terms of usefulness and longevity per dollar.