^^
Neil, they're looking good after 4 months. Knowing how often you clean your motor (and Bev's) they've probably been doing double time duty too.
I'd like to echo what Dan said. It inspires confidence to know that these products are being developed, tested and promoted by real world detailing enthusiasts who have the understanding of what is required and what makes a good product. Extra touches like the excellent drying bag, give real added value