I have never been to LHT nor have I dealt with them online or the phone. My friend's have had good experiences with them though.
I use to goto Secret Services allot (once a day or once every three days) when I lived closer. They are a really good shop. I never saw anything bad happen there, I never saw any bad customer service (although I saw POS customers) and they were always helping people. I have known John there the longest out of them all. He helped me with my entire build last time. They will take care of you. Just give them a call.