Peter Marshall's new article, ‘(Re)defining the English Reformation’, Journal of British Studies 48, 3 (2009): 564-86, is a very useful summary of recent views of the Reformation (from above/below, quick/halting, etc.), and even-handed, even though Marshall himself has staked a position in these debates. This was published too late, of course, to be included in the 2nd ed. of Sources and Debates in English History, 1485-1714, ch. 3, although much of the relevant work is included there under "Historians' Debates," grouped by various debate questions (74-77). Note that the Wiley-Blackwell website includes Historiographical Commentaries
from Sources and Debates in English History (1st edition), which, although not updated with new secondary works like the 2nd ed., are still valuable essays for further research.