I have issue bergans in long and short back, a Sabre 45, karrimor jaguar and a lowe alpine sting. I like the sting a lot. it's comfy, big, durable, but I do prefer the PLCE side pouches, they just feel more robust around the zipper than the stock LA ones.
There's a seller on ebay doing them at the moment a lot cheaper than Field and trek, although used obviously.
" Discovery consists of seeing what everybody has seen and thinking what nobody has thought. " Albert Szent-Györgyi