The Sigma LIGHTster is quite handy, but very powerful light, which is more than adequate for everyday use. The Cuberider II (taillight) covers an area of 220 °, thus ensuring good visibility. I myself live on Lake Constance and have therefore often to do with fog, so a reasonable lamp's wheel me was very important.
I think that you absolutely can not complain about the set price and therefore I can only recommend the set!