Have only dealt with HAD once, and was definitely a stand up deal!
I was deployed to Afghanistan and Jesse was running a promo sale for the 4th. I emailed to order a 1350 flange and get a quote for a new front shaft. Of course he needed measurements that I couldn't provide so he told me he would honor the sale price when I returned home. I called him up when I got back and sure enough he hooked me up on the deal as promised. I actually made a larger purchase due to the awesome service I received. That was 3 years ago and the zero issues with the product since then.