I have a 10 year old who is terrible with backpacks. Since she started school (pre-k, she's going to 5th) she has went through 2 backpacks a year. They just fall apart with her. My mother has suggested LL Bean back packs. She keeps telling me I should buy one of those because she bought one for my sister and it lasted her 4 years. Has anyone bought one before? I don't want to spen $35-$40 on a backpack if its just going to last till Christmas again this year.