The duvet (the comforter part) should be the same size as the cover. I've found that comforters are usually not the same size as proper duvets and don't fit the covers properly. Seems there is little standardization in these products. We bought our first duvets and duvet covers in Europe and no problem with shifting, just gave them a shake in the morning and they were in place. The covers fit perfectly which I'm sure was the reason why they didn't shift. I think clips or buttons would be uncomfortable if you actually used the duvet. If you only use it for decoration turned back no problem. Ties might be more comfortable.

amjo. I have made pillow shams before.One simple and one with ruffles.I used a Simplicity set of patterns I've had for years, has about 6-8 different pillows to make. I would stay away from the ruffles, a lot of work. I did them to "save" money by not buying the already made ones, and using the top sheet of a set that matched the comforter. Not sure if I really saved though. But more simple ones probably. I have been searching on and off for a while for a duvet cover and hadn't found one (want some sort of pattern in certain oolors) There are lots of choices for solid colors and decent prices. To make one with sheets for a king size you would probably need to buy 3 king size flat sheets and cut up one of those sheets to make a border all the way around. You would probably be ok making a queen size duvet using 2 king flat sheets. It is hard to buy just flat sheets. If you want to use fabric from a fabric store you will need to use 3 sections for length on each side. (I helped my sister do this once)

@Enduring: I've been doing some reading on other threads (both here and at AW) about the Water+ settings and the Maximum Water Level settings. These appear to have the same effects in both your machine and in the w48xx machines. From what I have gathered, the "Water+ / Water+ & Addt'l rinse" setting modifies what function your Sensitive button serves when activated. Have you been activating Sensitive with your last few cycles? If not, do so and report back. This could be why it doesn't seem like anything has changed! The "Maximum Water Level" setting activates Level III rinsing in all but the custom cycles (so, Normal, Wrinkle Free, MasterCare, etc.). I believe this is the setting Roc had activated by her Miele tech this week.

For an adult, I would get a decent quality down or down alternative comforter and then a print cover or an inexpensive print comforter. The comforter can last a very long time and go through a number of different covers as seasons or desires change. The animals and whimsy are fun, but for most adults, they would have a limited lifespan. And I am aa fan of whimsy. The Company Store and Cucddledown have nice comforters in lighter weights, but they will cost more than some you will be able to find on sale. Macy's has some on sale this weekend and likely will have at least some on sale now through the end of the year. It will become a question of selection at some point. You say she lives in a warmer climate. I am in Texas -- closer to Houston. We have the lightest weight from Company Store and only used it a couple of nights last year. It just didn't get cold enough. A down blanket or cotton quilt is plenty most of the time, but some years are different.