Aarn Universal Balance Bags

Hi again
So, thanks for all the responses to my BSI tent post - unfortunately this issue remains in limbo. But I was so impressed by the responses to that post that I decided to ask another question.
Does anybody have any experience with the Aarn Universal Balance Bags?
http://www.backpackinglight.com.au/stor ... 9/dp/12386
I recently tried one of the Aarn body packs on and, at least walking around in store, I was amazed at how much better 19kgs felt when distributed across front and back of my body. Thing is, I purchased a lovely Osprey pack last year, and it seems a waste to now spend $450-$580 on a whole new Aarn system. So, I was thinking about just purchasing the Universal Balance Bags, which apparently should be compatible with my existing pack. The person I spoke to at the retailer I went to was not very familiar with them, but was certainly enthusiastic about the Aarn approach.
Any comments/experiences anyone?
Many thanks
Julie
So, thanks for all the responses to my BSI tent post - unfortunately this issue remains in limbo. But I was so impressed by the responses to that post that I decided to ask another question.
Does anybody have any experience with the Aarn Universal Balance Bags?
http://www.backpackinglight.com.au/stor ... 9/dp/12386
I recently tried one of the Aarn body packs on and, at least walking around in store, I was amazed at how much better 19kgs felt when distributed across front and back of my body. Thing is, I purchased a lovely Osprey pack last year, and it seems a waste to now spend $450-$580 on a whole new Aarn system. So, I was thinking about just purchasing the Universal Balance Bags, which apparently should be compatible with my existing pack. The person I spoke to at the retailer I went to was not very familiar with them, but was certainly enthusiastic about the Aarn approach.
Any comments/experiences anyone?
Many thanks
Julie