I agree with Dare, ATOM so far has not proved a large enough change to switch to.
So yeah, I use SharpReader and I couldn't read blogs without it. I need to upload my opml to feeds.scripting.com so I can get a count on how many blogs I am currently subscribed to.
When I am reading the entries, I commonly open up the webpage to read the entry formatted or within the context of the website. I DO enjoy reading blogs in websites more, but there only a few where I actually take the time to open the entry in my browser.