As bargainseeker said, Morel makes some fantastic drivers, used in many high-priced popular audiophile speakers, and typically their speaker kits are top notch - a great way to save a lot of money if you have time and a bit of skill, but little cash to invest.

I've not heard this particular speaker you are considering, but I have heard that same tweeter in a variant of a speaker I built...it is very detailed yet soft, and not fatiguing. I'm considering buying it to swap it with the NorthCreek tweeters I have now.

To build these speakers I'd estimate a raw material cost of over $450, not to mention the time involved...This appears to be a pretty good deal. I highly doubt you'd find a commercial speaker for $595 with drivers of this quality in them. You've got me interested now.