Simaudio Moon Rocks & W8 amplifiers

I currently have Rockport Merak II loudspeakers and am considering the Magico Mini II loudspeakers. Both loudspeakers are 2-way systems (Rockport is ported and Magico is enclosed). Both have sensativities in the mid 80s (Rockport is 86 db). Given this backround, I would like to know if anybody has first hand experience with the Simaudio Moon Rocks or W8 amplifiers. If so, do you think they might be well suited for the Rockport Merak IIs or the Magico Mini IIs? I would utilize Simaudio's pre-amp with these amps.

Any comments would be appreciated. Thanks, banpuku