I buy a lot of my gear at REI. They don’t have everything for lightweight backpackers but they are getting better.
The reason I shop there is they take back any gear that fails you—you don’t have to deal with the manufacture.
You pay 20 dollars for a lifetime membership, then at the end of every year you get about 10% back of the money you spent there.
If you loose your card they will look it up for you. So you don’t have to worry about hanging on to it.
They also have a record of every piece of gear you bought from them so you don’t have to save receipts.
They are friendly about taking back your gear.
I used my Black Diamond Spot headlamp every day for 2 years and then it quit working. It had a 3 year warranty, so I brought it back to REI and since the price had gone down, I got a new headlamp and some money back.
Some people kind of push the envelope, like one guy I know returned his backpack because a mouse chewed a hole in it.
There are people that say REI stands for Return and Exchange Indefinitely.