I've travelled to 50+ countries, mostly as a solo woman. I own a number of Pacsafe products including wallets, purses, totes, and backpacks. I once purchased a Travelon purse at ebags.com. The lining of that bag ripped the very first time I gently put my hand inside the purse to test the depth of the pocket. I returned that bag and cannot recall if I received a refund or store credit. I will not purchase that brand again as I feel the quality of their products is poor.
I always take precautions when traveling by holding my bag crossbody and closely under my arm, being very aware of surroundings, avoiding subway and bus travel in peak crowded hours, not wearing a non-secure backpack, etc. My opinion, based on many years of travel, is that Pacsafe currently is the most secure and best quality brand for RFID products and bags or backpacks in general. I don't travel to large cities without my Pacsafe products. I think they are worth the money, as long as purchases are made when items are on sale. As mentioned above, a bag could be slashed and have to be replaced, but that is far far better than actually losing the contents.
In all my years of travel I have never been pickpocketed or had items stolen. When I was young I accidentally left a camera in a Bangkok taxi, that only happened once. Security for one's personal items is a combination of alertness, avoiding risky situations, walking with confidence, and the right combination of under-clothing wallets and secure purse, backpack, or daily carry bag. I also believe a reason I've never been a pickpocket or slasher victim is I never place a bag over the back of a chair or leave a phone lying on a dining or cafe table. I take security very seriously, it helps me be safe. One cannot be carefree and unaware, unless one wants to be a victim.