Uhhh... I weighted the tablets (5 of the old ones and all the new ones), they seem to be one to three grams less but I feel my scale isn't precise enough! The box is a centimetre less thick than the old one, but I don't think that will add much less weight! Actually, the scale read the same for both! Ahh, the new tablets are 18-19 grams each while the old ones are all 20-21 grams.
> FAVORIT: I didn't try the Eurospin powder simply because I don't have any near me. Other than Finish I tried Pril that is pure sh*t and Fairy that smells awful and the gel capsules break only looking at them, at least they cleaned... and let's not talk Svelto tabs, I had to wash everything at 70°C intensive or scrub by hand, simply useless!
Other than these name brands I tried Carrefour powder (5,99€ per 3 kg) and it is amazing! It is virtually odourless and cleans like nothing else, plus I can dose it. Second come Finish tablet, 3-in-1 or (I hope) classic.
Clorine bleach: it happend a few times that the plastic of the cutlery basket and detergent dispenser became pink because of tomato (I don't eat tomato but my flatates do) and that disgusts me, I simply ran the machine empty but with a small glass of bleach on a rinse cicle and after that re-rinsed to remove the smell. Fast, easy, effective!