The sl5000 is just what I wanted! It was really easy to set up, took about 30 minutes to build. The chair is really comfortable and ergonomic. It has really helped me sit up straight with just one week of use and I can see a noticable improvement in my posture as well. All the features on the chair are what I wanted and sitting on it has been super satisfying. The chair looks and feels great. The quality does not disappoint and the amount of detail put into the chairs design is good for its price. Overall, the chair It is totally worth investing in considering the chair is ergonomic and will be helping your spine and neck with every use.