While I've not heard the DWs without the Clarity Cap capacitors, the best part is if you buy them without, you can still add them on your own later on with nothing more than a screwdriver. I had a conversation with someone who bought without, and then added them, and he said they did a nice job of smoothing out the top end.
If you do buy a pair, the biggest thing to remember is to play with placement. Now that I have the Souls, its even more apparent how much more directional the DWs are. Toe in almost to, or completely towards the listening position seems to be the consensus opinion, and completely agree with. Also, fiddle with how far they are off the ground, how much lean back you like, some distance from the back/side walls, etc. If you want to just plop them down and expect them to be amazing, you might be disappointed.