I seem to recall there has been a bit written about the SCM35's on this forum so try some searches.

I have the SCM35's and am happy with them.  They are a good honest speaker for the price.  As mentioned by others though, the top end is probably the weakest element.  It's well integrated with the other drivers but it just lacks a bit of openess.  I wouldn't write-off the actives at all.  I guess it depends on what type of sound you're after but the active design has always appealed to me (although I haven't heard them) but I couldn't accomodate the SCM50's in our house.

I was talking to the dealer I brought my SCM35's off (ex-demo) and he happended to mention that they are now offering them at at 20% off RRP.  I got the impression from him that other ATC dealers are doing the same.