Go for it...I did! I just bought a pair of M50's, a pair of M3's for surrounds and a VP100. I received them last night, hooked them up and WOW, they sound amazing!!! I was particularly impressed with the M50's. They're so detailed, the imaging is wonderful and the speaker is fast and responsive. I'm also hearing many more nuances in DVDs and CDs than ever before. I've seen "The Fugitive" a million times on DVD, but last night I heard many little details that I've never experienced before.
If you do buy a pair, enjoy!
PS I'd go with the M50's over the M40's...I kinda liked the idea of dual woofers. I also thought that I liked the idea of the M50 floor standers rather than the M22's on stands, but that's just my preference.