Wayfair and Overstock are basically the same inventory, so check both for the item you're looking for. It may be cheaper on one than the other.
**and in creepy news, a Wayfair commercial just came on tv as I am typing this**
Quality is going to depend on what you choose to order. We ended up using Overstock b/c of pricing - Two years ago I needed to replace my every day dining table (as opposed to the one in the actual dining room that is never used, LOL). We got an amazing deal on a big table and six chairs, we're talking less than $1000 for all of it - and it's holding up and still looks great! We aren't precious with it, and don't feel guilty if it gets scratched or damaged (I coach Odyssey of the Mind, and it's had glitter, glue, hot glue, paint, etc all over it at some point or another - it has survived it all except for one tiny spot where hot glue damaged the finish on the top).
Our coffee table also came from Overstock and it's beautiful, sturdy, and perfect. The only thing I've ordered from there that I have any complaints about are the little side cabinets I wanted for each side of our living room fireplace. One is a little wobbly, and they aren't as high quality as the dining table and coffee table.
Hit or miss but worth a try! Good luck!!