Yeah, I did a search on M40 reviews last night. About a year (or 2?) ago, someone compared the M40, 50, and 80. Apparently the 40 came out on top, where price was concerned, and beat the 50 in most categories. If you search for showdown and M40, seaching for all posts, you should find it.

I am the Doctor, and THIS... is my SPOON!