Specifically, mixing B&W custom installation 7 series original in-wall speakers with the s2 line.\n\nWant to double check the typical 'use same brand of speaker in surround & height speakers for timber matching' recommendation because of the significant differences across the generation of these speakers. \n\nWondering if mixing the Nautilus soft dome tweeter with the newer carbon dome tweeters will effect the coloring and object-tracking in an immersive audio environment? And on the mid\/bass side, how will the evolution from the aramid blue Kevlar to the Continuum effect the sound. Also understand there were changes to the cross-overs, but don't know the specs or the implications...so, will mixing gen1 & gen2 across the array interfere with the sound tracking\/handoffs between speakers?\n\nNoted that some don't like the aramid blue Kevlar B&W has now discontinued and replaced with Continuum to a few rave reviews. Also noted that many aren't believers in Auro-3D content coming to fruition, but if it's as good sounding as the reviews say (including Gene's), I'll take the gamble, designing a 17 speaker array to play to both Auro & Atmos with the Denon x8500 switching capability.\n\nCurrent plan:\nLCR: CWM73s2\nLCR Heights: CCM73s2\nSurround: CWM7.3\nSurround rear: CWM7.4\nSurround & Surround Rear Heights: CCM7.5\nTop Middle: CWM75s2 (yes, an in-wall speaker placed in ceiling, see other thread on this question...) or CWM7.4\nVOG: CWM75s2 or CWM7.5\n\nSo I have the whole front sound stage top to bottom, left to right with newer s2's (carbon dome tweeters and Continuum mid\/bass). Pretty much could do everything else in the older discontinued and cheaper generation (soft dome + aramid) or get a few additional s2's in Top Middle & VOG per above. \n\nCan't wait to hear the opinions, and if anyone has spec differences between these including dispersion, which is key for the 3 tops I'll be installing.