text: rice cakes vs crisps.? i love eating crisps, but need to loose some weight! i have recently discovered flavoured rice cakes and think they are scrummy!! but are they a good alternative to crisps?? i can see that they are lower in fat, but are they too good to be true?? rice cakes have a very high gi index - it all depends on how you feel about what you put into your body. both are highly processed foods so theoretically best avoided but we are all after a quick fix and as long as we eat healthily 80% of the time, we should be on the right track.