Hi nicci, welcome to Exante!
I've not done Cambridge before but plenty of others on here have who may be able to share their experiences.
The Exante total solution consists of 3 'meals' a day- from soups, porridge, shakes or a bar. The total amount of calories is 600. No other food is allowed on total solution. People still get excellent weight loss on Exante- simply because as long as you burn off more than what you eat, you'll lose weight. 600 cals a day is easily burnt off by day to day living. So even if there are more cals in exante than cambridge, as long as you burn off 600 cals you'll be fine

The food break week is to reintroduce conventional food, to teach us how to eat properly I guess and it also can give the metabolism a boost. Most people still get a good loss during their food week, because the total amount of cals is still only 1000-1200 ish, which is again easily burnt off by just going about your day. There are some nice recipes on the Exante website. It's not a case of having a week off completely, you still have your 3 a day but add healthy low carb low calorie food.
What aspect of food break are you worried about? I worried that I would put on weight during food break but after seeing what people still lose I'm not anymore!
The bars are nice! They're big and chewy. A bit like a tracker bar (without the layer of chocolate

). I like the toffee nut one the best. The orange one was a bit pungent smelling for me, although it was nice to have chocolate! I found myself only want the toffee one though so didn't order any more orange choc. You can only have one bar a day but that's ok with me as I like the soups. I think most people who come to Exante from Cambridge find that the products taste better.