Reckon it is purely down to personal tastes. I do find that if you are not so keen on one of the shakes it is easier to knock it back without really tasting it than a soup. I really like some flavours, like others less and for the last 6 weeks have tolerated them all. Over the past week though I have started to dread one particular flavour of soup and may even buy in a different flavour to replace it. I especially love the bars, both of which I thoroughly enjoy.
Good luck with the journey. A few months of eating soups and shakes in return for a potential life time of slimness. It's so simple it's genius!
xxx