Don't know if the Dreamcatcher is ported or not, I don't think it is, but I have front-ported B&W 685s and they sound better on stands than they do on the wall. I was more concerned about music, which has a much higher dynamic range than movies, so that could have been an issue. The B&W 6 series' "bookshelf" speakers all have hooks installed on the back, so wall-mounting is an option for them. I have the 686 surrounds on the side walls.
If your speakers do not come with factory-installed hooks on the back, you face the un-savory task of turning screws into the speaker cabinet to attach mounting hardware, which makes me cringe a little. You could set them up on little shelves instead, I guess. Also keep in mind the binding posts in back require a bit of room off the wall to attach the wiring.
You can always try the dreamcatchers on top of a set of CMU, compare that to wall-mounted, if you like them on the CMU, then go buy some stands...
If I had a chance to do it another way, I'd have gone with floorstanders for the fronts. The 685s on stands look really nice, but they are a bit wobbly, its easy for a 5 year old to walk by and knock one off. That hasn't happened yet, luckily. I think floor standers would be more sturdy, and probably better for medium-to-big rooms.
Regarding subs, you can always buy one later. I don't think the sub needs to be the same brand as the front array (left, right and center), which all should be the same brand. If you buy full range floor-standers, you may not need a sub, lots of people don't use them. Depends on your listening tastes for music/movies. Lots of my music needs that low end, so I bought a HSU VTF-1, it makes the walls shake.
If your speakers do not come with factory-installed hooks on the back, you face the un-savory task of turning screws into the speaker cabinet to attach mounting hardware, which makes me cringe a little. You could set them up on little shelves instead, I guess. Also keep in mind the binding posts in back require a bit of room off the wall to attach the wiring.
You can always try the dreamcatchers on top of a set of CMU, compare that to wall-mounted, if you like them on the CMU, then go buy some stands...
If I had a chance to do it another way, I'd have gone with floorstanders for the fronts. The 685s on stands look really nice, but they are a bit wobbly, its easy for a 5 year old to walk by and knock one off. That hasn't happened yet, luckily. I think floor standers would be more sturdy, and probably better for medium-to-big rooms.
Regarding subs, you can always buy one later. I don't think the sub needs to be the same brand as the front array (left, right and center), which all should be the same brand. If you buy full range floor-standers, you may not need a sub, lots of people don't use them. Depends on your listening tastes for music/movies. Lots of my music needs that low end, so I bought a HSU VTF-1, it makes the walls shake.