From everything I have read, most people seem happy and many negative reviews involve not understanding how buying "real" furniture works, or from not reading the instructions on the website detailing how to accept or decline furniture and the consequences of canceling or returning. My personal issue lies elsewhere, customer relations and service.
First off is the warranty they push so hard for you to buy.
Read customer reviews before you agree of course, but beyond that just try to ask them for a copy of the full terms or contract before you pay for it. I have, at least 6 times now, and they will always 'get back to me on that'. Want to know how to know a warranty is a sham? If you can't read the terms before paying for it.
Second, the email and chat replies seem to come from a real, helpful, concerned human, but asking tougher questions (like above) gets met with stalling, followed by a follow up email a day later reminding you that that awesome sale price you were seeing is about to expire.
Great, so I ask AGAIN to see the warranty terms, and since I most likely will decline that anyway at this point, when would my furniture ship? No answer again. If they can't estimate shipping for some reason at least tell me that, or give me a '4 to 8 weeks' estimate. It's not hard.
They seem more concerned with closing a quick sale than building a relationship. Paying an extra $100 locally is looking like a good idea.