I tend to like simple due to the idea of clean taste. I have seen plenty of elaborate examples in plenty of things, and that makes me appreciate the simple aspects more. I really like the look of dark brown leather w/ kilt accessories...so I went for it. I say leather sporran strap is the way to go... kinder to the garment, and if you happen to wear a kilt that is an acrylic blend, saving some wear and tear is a good thing (and I do have a couple acrylic blends). Oh yeah, and I think it IS harder to botch a simplistic set of accessories, which is a good thing for those of us who aren't as inclin ed towards high fashion.
I like ordering from the Tartan Museum, despite the fact that it is across the country, and some of the stuff has a higher wait time than others...I just LIKE what the establishment is. I should be getting the first of my sections of cloth for a belted plaid any day now. Heh.