I appreciate first hand account. The more I read about this brand, the more I am convinced this is the way to go.I use the Revel W363, W563 and a center S16 wallmount. I can tell you the inwalls are EXCELLENT! Not sure I would do inwalls again though, since you have to cut the wall and if you need to remodel, will be a hassle. Still, they sound great. The W263 is a lower model then the ones I have but I can barely tell the difference, especially since I don't play it that loud.
I think the W253 would match very well with the W263.
Second question: I will be building backboxes in the wall to hold the inwall speakers and preserve my soundproofing efforts. I was looking but not finding any info on the appropriate cavity size desired for the W253? My room is new construction, so I can go as big or as small as needed. I just want to get the right size knowing that a typical install does not have a back box, but rather relies on the wall cavity.