Hello, i want to change my vrt3 unloaders, because they are living near 1 year, and so i dont like them. I want to choose between Pulsar 4 https://www.kleen-ritecorp.com/p-64368-general-pump-pulsar4khpez-trapped-pressure-unloader-with-ez-start-10-5-gpm-4500-psi-3-8-fpt.aspx and RM suttner st...