i would go for tetras or bars, i did lipo trim a few years back and didnt stick to it as shakes were vile but what made them worse was making them up at work in my silly hand shaker thing without ice etc, i used to gag getting them down lol. if you havent had the bars yet, they are sooo filling and really chewy you could almost have half and a black tea / coffee and the other hlaf later in the day at uni,i keep mine in fridge (im on maternity leave at home) but if i was back at work,i would be tempted to bring a tiny ice pack / cooler bag just to keep it nice and cool - lol sounds a bit mad but it just makes the shakes / bars etc so much nicer when they are cool x