First one I ordered didn't arrive, but that's not the product's fault. Amazon made me wait 15 days and then sent another one first class, which arrived today.1) These scales look really nice2) You MUST put the carpet feet on if you are going to use it on carpet, even on short pile, because the scales are so low-level that carpet gets in the way and the readings are *way* off with the regular feet (for me it was 10kg less or so - I wish!). Just peel off the rubber feet (a little stubborn) and clip in the carpet feet provided. Other reviews said to screw them on but there were no screws provided with my scales. The feet seem to snap on fairly well without screws. There are no instructions provided for changing the feet... Bad Salter!3) The readings so far seem very consistent. The accuracy is quoted at 0.1kg or 0.2lb. I have mine on stones and pounds, and the readings seem consistently the same in the last decimal point.4) Who knows if the fat/water measurements are "accurate" but these also seem fairly consistent between uses. I came out at the fat end of OK, my wife at the fit/muscley end - lucky me! BMI calc seems correct (weight in kg divided by square of height in metres).5) Note: The instruction booklet says not to use the fat/water/BMI measurements if you have a pacemaker or implanted device, or if you're pregnant.6) The four-person memory just remembers the gender, height and age of four people, not their previous weights/BMIs/readings, but that's OK for me.7) For a quick weigh you just press the scale with your foot and wait for it to zero. Then stand on it. This gives you your weight only.8) For the full monty you need to select your "slot" (memory number) using the buttons on the back edge, it then shows the stored height and age (to ensure you're on the right slot, I assume) and it then zeroes itself. You step on, it weighs you, showing the weight as it goes, then displays four little 'o's as it does it's fat measurements - another 3-4s. At this point it either then just displays your weight again, or cycles through your weight, BMI, fat and water percentages a few times before turning off. If your feet aren't "moist" enough it just shows your weight. I had to dampen my feet to get my readings: my wife's feet were apparently already moist enough... ;-)9) The booklet (10 pages each for a dozen languages) says it is only calibrated for kids over 16 and the BMI/fat/water for those over 20, but that hasn't stopped my kids being entertained by it and using it anyway.Overall, I'm very pleased so far - the price was reasonable, the main function of the scales seems accurate and consistent, and it also has the whole fat/water gimmick!EDIT: 2015-07-20 Just thought I'd add that, three years later, my scales are still working perfectly. I've changed the battery once and think I need to again soon as it flashed up a "low battery" message a week or two ago.