I already have a Clergy Kilt from FC, hence I ordered the Fly Plaid from there. They have a great variety of tartans and their service has improved greatly.

Different weavers, dye-lots, etc. make for different shades of what is the same colour, so ordering tartan bits of the 'same' tartan, but from different places is always a coin toss. My Granny was a seamstress, so she explained it to me over & over.

I ordered the Kilt from Stillwater, as I just plain like their instant delivery, and their products. I reckon if they had more variety of tartans, I'd probably deal with them exclusively.
I can't think what went terribly wrong! I ordered from SWK yesterday afternoon, went and waited on the porch, but it's still not here!! I fear Somnething in the Universe has shifted.... be afraid-be very, very afraid.!