Well I posted on the PE forum with a few simple questions. Mainly if the new xover would affect the sensitivity of the speakers. Pete responded that it won't. I won't get into arguements about xover design because I have no idea how they work. His xover design may be the cat's meow, who knows till it's in the speakers.I'm happy with the 1st order xover I have now, but if someone is willing to buy me parts I'll build one of Pete's designs and we'll just see what it sounds like 
I don't care how many sims you run and on what software. Just because something sims out, or even measures great, doesn't mean it will sound good. Look at SET amps. They tend to measure crappy compared to SS or PP. But a great many of them sound very nice. If it doesn't sound good in the end then it's just junk to me.