This paper reports the results of randomized experiments comparing branch, grid, and list question formats for many different questions in an Internet survey with a nationally representative probability sample: the American National Election Studies' Evaluations of Government and Society Study. We compare the three formats in terms of administration time, item nonresponse, survey breakoff rates, indications of satisficing, and criterion validity. Results also show there are tradeoffs between data quality and quantity. We meta-analyze the results to quantify these tradeoffs and we conclude with recommendations for optimizing these tradeoffs in various research settings. For many purposes, grids are an appropriate format choice.