Packable packs for peak bagging

Hi All
Wondering what works for other and what options are around with pack-able packs for peak bagging and other side trip walks.
I have been using the Kathmandu packable pack at around 200 grams for 15 litres and found it not too bad though managed to put a small hole in it but it has not torn from that hole. The waist strap makes for a steady carrying and can take some of the load off the shoulders but I sorely missed the chest strap as when briskly coming back from Pelion Gap to the hut poling along the straps would work their way down my arms demanding constantly tugging them back. Not so much a problem without poles.
My friend brought a Sea to Summit silicon one and super impressed by its packed size and weight but it only has shoulder straps and she found they would scrunch up like a plastic shopping bag handle into the bra strap indentations and become rather uncomfortable plus took extremely careful packing to avoid being poked in the back by what she was carrying plus found it unstable on the back in scrambling.
I visited Kathmandu and yes the half price sale meant about normal pricing so I brought the next level up on my packable pack that uses the same rip-stop nylon. It claims to be 18 litres and weight 370 grams. It has a chest strap and piece of rubber foam to protect the back but can be removed at 35 grams and can handle a drink bladder. In all very promising but as yet unused. It sale price was above forty dollars so it normal price is a rip-off at near ninety dollars. I am not sure but at this stage it looks about the best weight to feature trade-off.
Just wondering what other options are out there in case this does not work out.
Cheers
Wondering what works for other and what options are around with pack-able packs for peak bagging and other side trip walks.
I have been using the Kathmandu packable pack at around 200 grams for 15 litres and found it not too bad though managed to put a small hole in it but it has not torn from that hole. The waist strap makes for a steady carrying and can take some of the load off the shoulders but I sorely missed the chest strap as when briskly coming back from Pelion Gap to the hut poling along the straps would work their way down my arms demanding constantly tugging them back. Not so much a problem without poles.
My friend brought a Sea to Summit silicon one and super impressed by its packed size and weight but it only has shoulder straps and she found they would scrunch up like a plastic shopping bag handle into the bra strap indentations and become rather uncomfortable plus took extremely careful packing to avoid being poked in the back by what she was carrying plus found it unstable on the back in scrambling.
I visited Kathmandu and yes the half price sale meant about normal pricing so I brought the next level up on my packable pack that uses the same rip-stop nylon. It claims to be 18 litres and weight 370 grams. It has a chest strap and piece of rubber foam to protect the back but can be removed at 35 grams and can handle a drink bladder. In all very promising but as yet unused. It sale price was above forty dollars so it normal price is a rip-off at near ninety dollars. I am not sure but at this stage it looks about the best weight to feature trade-off.
Just wondering what other options are out there in case this does not work out.
Cheers