The mousse option is made from your shake I think with just less water, I reckon it would probably taste the same as a shake although never tried it myself
I found vanilla the worst. I couldn't stomach it at all. Everyone is different. I can only take then if they are made with a blender, poured over lots and lots of ice and then drunk through a straw. Fussy me? never Strawberry is my favourite. I hope it gets easier for you Bettyboo.
I had to have them blended with ice and use a straw too or I had vanilla or choc hot & blended, I thought they were nice. Hot vanilla tastes like custard
I'm wierd as I love the shakes and mouse. At home I eat mouse as it feels like I'm having a meal then, I say stick with it and your taste buds will adapt