Fairly Cheap and easy to play - a great first soprano
Intonation is slightly "dodgey", especially on the high notes, and you don't get the depth of tone or quality of sound that you would get from a more expensive sax (eg a Selmer). Supplied in a stupidly large case! (*)
A good sax, easy to play with good intonation, and a good keywork design. Also looks extremely cool! - i wish i could get my selmer in this finish!
It lacks the depth of tone found in most professional saxes, and it is also quite expensive - if you've got this amount to spend on a sax I would definitely reccomend a selmer instead of a keilwerth. (*)