I have OM-9s for the front L/R channels, an OM-C2 for the centre channel & FRx-3s for the rear channels. The sub is a Sunfire True Subwooker Mk II. 'm trying to determine what speakers in Mirage's current line-up would be equivalent to my setup. I'm content with the sub and will not be replacing it. I also don't really see anything in Mirage's sub line-up that is equivalent to my current sub.

Previously I thought I was more concerned with 2-channel performance, but as time has passed I've noted that I spend significantly more time watching movies than listening attentively to music. So, I'm more concerned with a system geared more towards home theatre than 2-channel music. Don't get me wrong, the system must sound good on 2-channel music also, but the financial investment will be more even handed between all the non-sub channels.

I have the OM-9s and love them. The OMD-15s would be the best equivalent. If you have more money, the OMD-28s are the new flagship speakers. OMD-C1 for center and OMD-5 for surrounds. The OMD-C2 and OMD-R are the high end of this line. If you are happy with the current front speakers you could consider adding the OMD-5s for the rear and keeping the OM-9s and OM-C2 you have.

 No, currently I'm not planning on replacing my speakers. When I get a new TV (from HD RPTV  to flat panel) then I will consider replacing them.

I love the OM-9s & the OM-C2, but I'm not impressed by the transition between the OM-9 & the OM-C2. I hear a tonal difference. And it's for this reason that I rather go with the OMD-5s for all channels instead of the OMD-15 and OMD-C1. They use different drivers and different crossovers, so I expect that there will be a tonal difference between the two regardless of how subtle it may be. The fronts should be identical for absolute sound integrity between the front channels.I also believe the OMD-5 will not work well as a centre channel with the OMD-15 because of the dynamic characteristics of the speakers. One is a small bookshelf speaker while the other is a floorstanding model. However, the OMD-5 should sound better the the OMD-C1 because it shares the same drivers and crossover as the OMD-15 except for the second woofer's crossover.

I also don't like woofer/tweeter/woofer centre channel speakers for the suck-out that occurs off axis, i.e. couch ends. The suck-out is in the critical mid-range and affects voice intelligibility. Frankly, I consider such speakers to be a poor design for centre-channel speakers. Ask yourself, why do most of the expensive centre channel speakers have a tweeter/mid-range and woofer(s) set up or have the woofers with different crossovers that don't overlap the critical midrange area. When set up vertically the woofer/tweeter/woofer speakers work to limit vertical dispersion, but that's not necessarily what one wants in a speaker set up horizontally.

Just my two cents worth from someone without any speaker design credentials.