Metronet,
Both the Forest and the Mani-2 play nice with class D amplification. I've powered both of them with my H2O Signature 100 with splendid results. Of course, that amp uses a beefy linear dual mono power supplies and is stable down to 1/4th of an ohm..so neither speaker put up much of a challenge for it.
Most decent class D amps, even ones that use fairly inexpensive switching power supplies (like NuForce, Bel Canto, etc) should be able to handle the Mani-2. Class D typically doesn't struggle with resistive loads so much as they do with active loads (think full range electrostats). Since that's not happening here, I wouldn't really concern yourself over which speaker will 'mate' better with class D topology.
I also wouldn't concern yourself over someones highly subjective rants on a product. The bottom line is that if you search hard enough - you're going to find someone saying something negative about every loudspeaker, amp, what have you - in the industry. The reason why there are so many different designs in the market is because there are that may people who feel differently about how to attain the same goal.
Also, Stricken is completely off base with his comments regarding the drivers Totem uses. Totem uses the Hi-Vi driver in the Forest only. However, Dynaudio drivers are used in the: Model 1 Signature, Model 1 Twin, The One, Mani-2 Signature, and the Wind.