I too have upgraded from the 40's to the 80's. I know it's not the 100's, but I bought 4 Studio 80's and the Studio center channel. I am currently running a Yamaha RXV1 and still am not fully satisfied. The RXV1 is rated at 110 watts per channel. I think you will be wise to go to separates, or a power amp and use your receiver for a processor. I heard the 80's with a Bryston set up and the clarity and soundstage was unbelievable. If you can afford to buy the extra power, do it! Don't get me wrong, my setup is great, but after a year or so you start thinking about what it would sound like if I had separates, and so on.
