there are a lot of varieties but all tend to be slightly bitter (can be enhanced according to dressing) and I love them all and grow as many as possible, especially love the radicchio types, red and white, ballhead or slender - yes the flowers are lovely, always blue?, best thing to do is experiment - Franchi Seeds have a good selection but I hope you can get the like their flavour, such a fantastic salad ingredient and can be cooked as well