I own one solid colour casual kilt, and it is from Freedom Kilts. It's made-to-measure and fits like a glove. It's easy to wash, dry and care for. I will wear out before it does, and I wear it a lot. (See my avatar).
I have two things that I'll do differently with my next FK: I'll get the two slash pockets only, and I'll get one with straps and buckles.