Couple questions for yu Spectrum, (to try an better gauge what your hearing and want)
Some people think of mid warmth as recessed a bit, like east coast sound, not raised
a bit like the JBL west coast sound.
When you listen to your NS1000's where do you have the mid pot dialed in at when it
sounds best to you? Is there any setting on the NS1000 that will make them sound at
least a bit like the waves in the mid? And if so what is that setting?
Have you listend to the waves with high frequency pots turned all the way down, if so
do you still hear the "edgeyness"? If not can you try this experiment?
I also agree it can be very difficult to get the full merits or warts of a speaker with just
AB'ing them, it is better for me to listen strictly one set an try to forget what the other
sounded like, yes think of them as 2 completly different speakers an not try to think X
speaker should sound like Y. You may never get them to sounding the same, nor should
they as they are quite different in there construction so will more then likely have some
different strength's an weeknesses. Does not mean you can't tweak your DIY speaker to
sound more like what you want it to be like, but there may be only so much you can do
with there particular charactor.
Also I find extended length's of time with a certain speaker, learning to appreciate what
it sounds like then go back to different speakers can be quite eye/ear opening as well.

No if you just dislike the speaker altogether it won't help, but sometimes you get use to
a certain sound then listen to something else and it just doesn't sound right at first but
if you lived with it longer an become accustomed to it you "can" begin to appreciate it in
a way you first did not an now that becomes your new reference.
I am not trying to tell you the wave WILL be the speaker you should prefer, nor am I to
say the wave is a better speaker, the 2 are different and do sound different, I've heard
the NS1000 and liked quite a bit of what they did, the waves work quite well in my set
and the things they do well outway the very few things they don't do fantastic for me.
I still say the selenium needs some break in, also tweak the xover with the parts you
have coming to try an get the best sound you can get from them for you.
Give me some feedback here and I should be able to give some xover pointers to help
achieve the best for your setup. (In otherwords keep the feedback coming)
Have you tried any different amps as well? I have used 5 different amps, and they all
do sound different, some I like quite a bit more then others.