[QUOTE=Sealed]. Probably a tougher choice would be PMC OB-1 Vs Scm-35.

I heard OB-1 once (was listening to a Robert Cray compilation album), and for some reason I had an uneasy feeling that the sound was in a way disjointed, as if the bass, no doubt impressive, played it own music. Was it really lagging or was it me thinking about the TL and whether if causes any time smear? I don't know, I just listened to 4 or 5 songs. Then I just thought - if I choose PCM I'll stick to some of my records because others would not sound good enough to me. And that's the last thing we all need. ATCs are not as explicit at the freq. extremes - the hights are ever so slightly rolled off and lower bass in not as evident and tactile, but overall I somehow felt much more comfortable with ATCs. They have this wonderful quality of being laid back, easy going and cultured - only to sparkle and burst with huge dynamic sound when needed. Add to this their fundamentally neutral tonality. I own it for more than a month now and never get tired of them. Whatever the reviews say, it does not demand an enourmous amount of power - my Brystons' 250 W p/ch is way more than enough. You are right in that they like being driven hard, but ATCs happily responded to my old and modest Exposure XX integrated, if played not loud. And it's just 55W. So, about 100W is enough by all means. AVi Lab integrated drives them with ease - bass is SO great! It's just not quite transparent and detailed enough in the mids for them. Bryston P60 also drives them well at low levels, I just do not like it's lower registers - warm and not very well controlled to my ears. I tried it with Musical Fidelity A308 - a monstrous integrated. As you would say - dreck, some uninspiring milky mids, lousy hum, a lot of blue lights enough for a Christmas tree and one big cartoonish volume knob. And by the way, ATCs were quite ruthless in showing how in fact distorted, congested and one-dimentional are Exposure's mids too. But it's not that Exposure is bad - I love it, and with lesser speakers it sounds brilliant. Yes, and it's actually for sale if anyone is still interested.
Ultimately, if you can not choose between OB 1 and ATC 35 - your room must be one big factor to consider. I suspect OB1 just needs a bigger room.