They missed a couple of items on one of my orders, but it was noted, and it showed up on my door step 2 or 3 days later.
Decent customer service. Not outstanding but not bad either. They had advertised their oem alarm system for the element to come with two key fobs. It didn't come with the fobs, so I called them up and they said "they don't come with them". So I directed him to their own site where it clearly said that the alarm system included two fobs (alarm fobs with keyless entry buttons, panic, etc.) He said "wow, it does say that. We'll be happy to refund your money.. I stated that I didn't want my money refunded, I wanted my fobs.. And he just flat out said "no". So I had to lay down an additional $120 for the fobs. Pissed me off. But in all fairness, he did offer to refund the alarm without an argument.
I have since ordered from them a dozen more times and have yet to ever really be "burned".