The only issue I have had with my HTM-2 is that it took what seemed like *forever* to break in. I have the HTM-2 mated with (4) N805s and due to the lack of use, it took over 3 years to break in the center channel and sound anythig like the R/L N805. After driving Wilco's "Yankee Hotel Foxtrot" and Eminem's "The Eminem Show" through all 5 channels for 7 days straight (yup...wife was out of town) on top of the 3 years or ownership the HTM-2 *finally* began to sound good.
If I were you, I'd ask myself if you *really* need a center channel or if you think you need one because that's what an HT setup is supposed to have. With proper synergy, the N802s can really define a soundstage, and unless your screen is exceptionally large and you choose to sit way outside the sweet-spot, a center channel may not be necessary.
As always, just my opinion.