I'm also going to echo what the others have said. It's impossible to know before you try them which ones you will prefer, and your tastes may change over time on the programme. You can definitely swap packs in your 'pop in' in the first week, so I'd say just take a wide selection.
Oh and do remember they are a kind of medicine to lose weight, and although they're called 'food' packs, any resemblance they may have to actual food is purely coincidental! (some of them are decidedly strange, but once I got my head round the contents of the packet not being necessarily the same as their labels might suggest, I found most of them palatable.) oh and i also found it helped to think of astronauts with their peculiar but practical freeze dried rations... Made me chuckle, and keeping cheerful on this plan goes a LONG way to keeping you on track!!