I have been using this service for a few weeks now and not only have they always, day or night , been available quickly they are able to answer any question I have thrown at them.
I have had multiple websites on the internet for over 15 years and so I am able to figure out the easy issues that arise out of having an e-commerce site. I have become used to chat, email, and phone support where I have to ask the same question multiple times before I get to some one knowledgeable enough to understand the advanced questions I send in and/or ask. I have used this chat based support at least 10 times and I have yet to get someone that has any trouble at all understanding the problem and recommending a solution - even when it dealt with companies outside their own sphere.
This would be my #1 pick for support out of all companies I have ever dealt with!