This miele replaces our old 15 year old one that's been on at least twice a day, every day and never broke down. We changed as our existing was stating to loose performance.
You will definatley need to read the instruction booklet as technology has certainly moved forward but after a couple of days it's really easy to use. The twin dos is a sinch to use and excellent, you get 2 bottles included and a voucher for 6 months of detergent. If you want to use your own - you can and it's easy.
Using the programmes you can adjust the soiling of the garments and reduce water consumption (significantly) on single or small groups of cloths. The full 1600 spin cycle is very quiet, so quiet you question that its actually going at full spin. Clothes come out almost dry and cleaner than they have before.
Jeans with stubborn stains that would normally be pre-washed in the stain treatment advertised on TV now just go in the machine with the rest of the load and come out perfect.
Hope this helps your deliberations!