I've ordered several MOSFET's and fuses from him, along with wiring. A couple days slow sometimes, but it's always an understandable delay if there is one. Great customer service. When he found out that some MOSFET's I had bought had a mislabeled part in them (not his fault, the electronic part distributor's issue), he contacted me and traded me a corrected unit. He tests all of his MOSFET's before he ships them out, so you are pretty much guaranteed not to get a dead unit. Terrific prices also!
In short, I haven't had any issues with him as a seller or with his customer support. Great products at great prices delivered in good time with exceptional customer support.