True. I forgot to include the other end of the spectrum: larger turbos = increased lag time. There are some benefits to be found in larger turbos, however, you just have to see them.

Bottom line is choosing the correct size turbo depends heavily upon your application. If you want to run autocross or street race, a relatively smaller turbo is your best option because it'll have a faster response. If you want to do full 1/4 mile runs or freeway racing, a relatively larger turbo is preferred due to it's ability to flow larger volumes of air for longer lengths of time.