Pressure Cookers

I recently purchased a WMF Perfect Plus Pressure Cooker 6.5ltr from amazon.co.uk. I had been watching it and when I saw that it was 25% off, I went ahead and bought it. I already had a pressure cooker, a much cheaper one, and although it was ok, it wasn't brilliant and also wasn't big enough. Mayumi recommended a Silit which from the reviews does appear to be excellent, but it was more expensive than the WMF which also had excellent reviews. The WMF is German and they do the best washer machines (Miele), the best knives (Wusthof - yes I know about Global which are comparable), etc, so I figured I'd go for it. I also went for the larger size, 6.5 ltr, and although I have not used it to full capacity, it is there if I need it. The first time I used it I nearly cried as I thought I had spent all this money and well, not that it didn't work, but I really didn't understand what I was to do as it was so different. But, I figured all the reviews couldn't be wrong and I persevered and within a few more uses I had it down. You can't hear it making lots of noise which made me think it wasn't working, but it is so far advanced from what I had that I simply wasn't prepared. It is brilliant and I highly recommend it - also, Mayumi says that all her recipes are for the Silit and I find the recipes/times work perfectly for the WMF!!