Comparing sailmakers with shade sail makers is a bit like comparing a cabinet maker with a carpenter. The sailmaker should be the better choice, whether the extra cost (and performance) is worth it, depends on the function. I have great difficulty in convincing my brother (ex racing sailor with a number of Sydney - Hobart runs under his belt) that it is worthwhile having a washing machine on board a cruising catamaran. If you are intending to race the thing, and have a possibility of winning, spend the dough. If you're out to enjoy yourself, get someone who can drive a sewing machine to cut off the bottom 300mm. And don't put a washing machine in a trailer sailer. If the clothes stink, eat more garlic.