My experience was waiting over a month for a pair of monacor's. I found their customer service really snooty and unapologetic.
Which Monacor?
I bought my pair of MSH115 mids from Wilmslow audio, and the price was...reasonable. not far away from Monacor MRP (shock horror!)
I agree, I wouldnt use Blue Aran either, not because they have bad reputation, but because I know they only order from Manufacturer, once they have enough requests, to get a price that they can make profit on.
Having to cross alot lower, around 2.2khz(to satori MR16P-4)
There is a 2nd order spike around that point, but not overly worried
On light use theres no worry.
What i have notices usually best to cross driver point where distortion begin to change to get best out of it. 2k with 2nd slope might start to sound strained