The JTB1150FO is an awesome trombone. For several years, Jupiter was a bit behind on these because they were working on the trombone slide technology. The slides fresh out of the box and unlubricated are slicker than ice! Comes open or traditional and lacquer or rosebrass in either form as well. They have a 10 year manufacture warranty which is the best in the industry and the area Business Development Manager lives in Central Texas who is always awesome taking care of any issues in the most professional way or even visiting a bandhall with concern to take care or to say hi with a music store ed rep! Cheers!