Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Can you store the pans by stacking inside one another or do you need to keep them hanging to not to scratch the surface?
Document: Best I've ever owned great handles lids nonstick surface awesome all the way around probably the last set of pots and pans I'll ever need
I bought this same one in costco on sale for 159.00. Original price was 200.00. I haven't used them yet just wanted to let you know this is a major rip off. Always check other stores before buying off of amazon because it may seem cheaper but by the time you get through shipping it costs $30 more than in store and you have to wait for it.
The purchase was a wise one. The quality is great,and the assortment of sizes was well thought out. The one thing which I found irritating was the handle. There is a indentation rectangular in shape at the end of the handle. When you place the pan in the dishwasher it fills with water and spills on the clean dry dishes when you are unloading it. So to avoid this you need to carefully lift the pan out of the dishwasher as not to spill the rinse water on the dry dishes.
I was ready for a new set of pans and started my search, I looked at everything on line. I have a glass range top and you do need to be careful with what the pan bottoms are made of. I've had my 13 pc set of the Circulon  Premier  Professional for a couple months.This set is wonderful quality a very good feel to the weight not heavy but solid feeling. Wipes clean with soap and water nothing sticks! The bottoms are perfect for any stove top especially for glass.
I loved everything about these pans. But after using them about 2 weeks we made some chocolate milk and noticed a background taste. I tested to see if the taste was coming from the pans. I boiled a cup of water in 3 different pans, waited for the water to cool and tasted the water, There was a strong chemical taste. I did not even need to taste the other 2 cups of water. Once I recognized the taste that apparently continuously leeches off the pan, I had to return them.
I bought this set about six months ago and initially I thought it was a great value, didn't take but a couple uses to realize every pan/pot has a warped bottom which inhibits full contact with my Jenair solid stove top burners, gas stove probably would work fine. I packed em up ,returned to store for an exchange and came home with another set with same issue of a convex bottoms.
I could send them back to factory for inspection and maybe get em replaced but I'm convinced a new set would have same issue. In addition to the inherent bottom flaw of this set the handles are in my opinion greatly undersized on pieces larger than six inch diameter which can make holding a pan full of goods difficult to keep a balance of while handling, all handles are of same diameter and a man hand will have a gripping problem on those larger pans. On the plus side the non-stick technology is great.
This  set if a joy to cook with and absolutely beautiful. I do have one complaint....there is no cover for the largest fry pan. I hope I can find one.
I have probably had my cookware for about 8 months. I absolutely love it. It cooks good and cleans up well. I'm one of the Amazon customers that  bought my set at Costco, but, just like many customers said that doesn't have anything to do with the cookware's performance. I did make a very positive comment on the 1 (one) star Julie review. This cookware deserves 5 stars if you use the correct cooktop and heat.
I chose this set for value and need of a new cook ware set. So far so good. Has met my expectations.
Answer: I have been stacking mines since I received them and haven't seen any scratches inside. Received them about a month ago.