I'd go with the R-kilt in leather. His leather and craftmanship are superb.
The other thing is his attention to detail for size. He makes the kilts for you, it's not off the rack.

I've see too many i'll fitting kilts from others (too long, flare up at the back and just not sized right) and when you spend that kind of money, get one made for you not just people around your size. Everyone body shape is different and you can't get the proper fit unless it's made for your shape. I swear some people don't know how to measure or they just don't care as long as you buy it.

Robert cares about his kilt and will suit you up right.

Kilted Stuart