We've had Samsonite, soft side, over 10 yrs but they were not purchased at an outlet. We are not outlet shoppers because we feel that the merchandise there is there for a reason. Bottom line, you get what you pay for.
At the time, we spent a good chuck of money. I can tell you it is very frustrating to have your good piece of luggage come out on the baggage claim looking like it has been to hell and back. The airline employees are not careful with luggage, they can't be handling every piece with kid gloves, plus the fact that you can't lock them anymore is a bummer. We fly a lot and 9 times out of 10, my bag has the little note from TSA saying it was inspected. Ugh, they mess up my packing system.
We are not in the market for luggage right now but I would probably stick with Samsonite or other name brand if I bought more. I like the soft side vs the hard cases. That is just a matter of taste.
Around here you can find it at major department stores.
Good luck.