The Thomann SL5 is a fantastic soprano trombone, ideal for trumpet players and trombonists alike. Positions are more-or-less where you'd expect them to be, and the instrument has a lovely sound.
The tuning bell is a little too short, and therefore it can be difficult to tune the instrument without it ending up a little sharp. But this is common in all soprano trombones at this price point.
The instrument is well made and the slide is slick. The lacquer is more heavy wearing than most instruments at this price, and I haven't had any issues with it rubbing off yet.
The mouthpiece included with the instrument isn't good at all, but it will take any standard trumpet mouthpiece, so find one that suits you. The case had a couple of rough edges, and I have cut my hand several times from sharp rivets on the handle.
This instrument is perfect as an extra little bit of fun for trumpet players or trombonists in jazz ensembles to add that little extra, and is also suitable for a range of more 'modern' trombone quartet repertoire.
Would highly recommend.