The CE-2w? Everyone seems to love the old CE-2, so I would think that the CE-2w would be even better. Have you ever used the old version before, to compare, even by memory? I assume that this one is in stereo, which always makes things better.
I've never tried an old version DC-2 to compare, but the Seraph and the DC-2w are both really great, and the stereo effect has to just make it better. I love them both, no regrets at all.
I've sold a lot of old Boss pedals that I used to have, except for the BD-2s, a PS-3 and a TU-2, and didn't think I'd really be buying any more Boss pedals, but the waza DC-2 made a believer out of me. I'm actually kind of looking forward to see what else they come out with in their waza line.
I hope you like yours, you'll have to let us know what you think of it.