I need to buy dual intake silicon hoses. AMS has them for $40, Z1/CZP sell them for $70. I've heard bad things from AMS, but how badly can you f*ck up a Silicon hose? Is it worth 2x the price to buy from Z1? I would prefer not to hear about AMS and their ethics / history, I just want to know if the product would do it's job well. Thanks in advance.