I'm going to get the Atlas. Went to look at one at the showroom, and I think the quality is exellent.
Cheap Chinese ****! Hat to say it but it's true. Hope you have some good insurance and are quick on your feet should the load on the lift start to move or a wield gives. Keep in mind that most of these lifts made over in China, Korea, or Asia period are not built with 3rd party certification, are not tested and in most cases are built on dirt floors by labor that might or might not know what they are doing or use even marginal materials and tools.
If saving the few extra $100 is worth it to you then you and your OK with a cheap thin steel lift, then you have found your lift.
I would personally spend the extra money and get a lift that is third party cert. ALI/ETL and comes with a warranty for parts and labor for a few years.
Not trying to scare ya, but you get what you pay for and when it comes to a lift and 3000lbs of steel above you or your family members I would personally not take any chances when it came to a 2-post lift.
Compare the spec's and shipping weight of the Atlas to a Rotary or even a Challenger CL10...you will probably will be surprised by the difference, and less weight is not always a good thing when it comes to lifts.
Unless you really know what your doing on the install I would have a pro installer do the install, these guys put and service these things day in and day out and know what works and does not work on an install, plus in the case of Rotary I think you get extra warranty if their factory trained installer does the install.