i need help finding an rss feed widget that does the following:

i only want to use 5 blog/feeds but I want it to show the past 4 posts from each of the blog/feeds.

so i need one that allows you to determine how many posts of each rss is shown.

anyone have any suggestions? Ive found many blogroll widgets but they all only show one post per feed.

sayfiereview.com is a good example of what I am seeking