I've been using this site for a while now and usually ordered papers having some time in advance. Recently I had a tiny emergency and needed a 4-page essay like on the day before. I knew I had no chance doing that, so I ordered the paper with 8 hours deadline. However there were a few typos (like «extrappolated») the quality was great.
I guess my writer had to pull an all-nighter (or she doesn't sleep at night?) but the fact is that the work was done by the deadline and it is really well written. Even in the universe where I don't have troubles with sleeping, I wouldn't manage to write something bright and adequate.
I placed my order around 8 PM and my writer almost immediately asked me things she was unsure about, so I didn't woke up to 5 messages from her that she couldn't complete the paper in time.