I started with an Eberlestock J34 on my first western hunt. I sold it and bought an Icon Pro when they were first released back in about 2014 and have used it every year since. These pack are not in the same class in my opinion, based on experience with both. The Eberlestock is heavy and it does not carry weight nearly as stable or comfortable as the Icon Pro. In my opinion the Kuiu Icon Pro is a very good pack and it has performed very well for me hauling meat for the past 4 years and many miles / hours training with wt up to 70-75 lbs. That being said, pack fit and having the pack adjusted correctly is a big factor in how the pack will feel to you when loaded up.