Well, I am a professional Gamer, I stream gamers on YouTube, I need some suggestions related to sofas where I can sit comfortably for more then 5-6 hours and play pc games.
Haha, a stalking Streamer jokes aside, how about the "Lane Omega Leather Multimedia Power Recliner Sofa"
Many years ago I was always sitting on comfortable chair with back support, but my back always hurt. It all changed when I have learned about importance of posture during sitting (I can recommend Esther Eokhale book) and now I can sit comfortably even 10 hours (on the worst possible chair and I dont even need back support). I'm telling you man, chair is not your problem if you feel tired during sitting, it's your collapsing spine thats the problem. If you will not care about your spine and posture no chair will help you.