If you like the Meridian house sound then continue with Meridian. The 7200 in any version is leaps and bounds better than the 5500 in terms of power, scale and dynamics. Plus they are way more pleasing to look at. A dot 2 or SE version is icing on the cake. DSP speakers are bread and butter products for Meridian and they should be around for a lot longer because of that.

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One step from the Presidency
#1 Trinnov Altitude 32-8-16, 271, 8000XE, 7200SEHC, 7200.2, Seaton F18, JL Fathom F113, Revel w990's, Kef R7, ATI 528 Amp, JVC RS4100K, SI screen. Roon Nucleus+, Eno AG, Eno M link, 218.
#2 Mark Levinson No5105, Ayre VX8 and CX8, Vandersteen Treo CT, Preamp varies.
#3 Meridian Ellipse