If you like the color of the pine I'd suggest you might consider natural maple and white washed maple instead (unless you or sig. other are really into knots smile ). The color is somewhat similar It's just a nicer cleaner wood IMO. I have maple in my family room and really like it.

I have the natural walnut in satin on my subs and surrounds ... it looks just like your sample ... not much of a sheen. I have them in the HT and choose that color to blend in a bit ... in hind site I kind of wish I went with maple (just because I like it so much).

On the gloss ... if the speakers are going in the front of the viewers you might want to think about refections ... They might be distracting while watching a movie ... the light and reflected movement tends to draw your attention.