I want to thank Thomann.de for the fastest delivery and careful handling of the instrument, you guys made me happy and gave the best time this year (you and Michael Rath course ). Cons: The first and most obvious is written in desription of these '00 series the instrument is not modular, which makes replacement of leadpipe impossible, it saddens me a bit, but it is stated by the manufacturer, and I knew that was going on. The second the lack of mouthpiece. Unfortunately, I did not have a bore related mouthpiece (7,11 or 12 Bach), was only 6 1/2 Bach, so I haven't be able to experience fully the power of an instrument, I think. Third I was a little disappointed with the slidetobellsection lock system, which looks so beautiful in the picture, but in fact you need to make an effort to avoid bell staggered left and right. Sometimes when I spin it well, and it spend the day in the assembled state, it can be difficult to disassemble. I think this will be hard to child. I do not except that this is just a small factory defect on my particular horn. Pros: The instrument is made on the patterns, made by generations of engineers and perfected in the Rath factory. All the overtone series are in right place and sound correct in all registers and do not change their timbre color. I do not know exactly what causes the trombone sounds so warm and tender, perhaps a combination of gooseneck material, the material of the bell and lacquer. The bell sounds very easily and gracefully, responding accurately to any dynamics from ppp to the fff. It includes the characteristics that I was looking for and did not find in King 2103PL and Yamaha ysl620 (my previous ones), proved the main hallmarks of Rath R100. This airy, light, smooth and warm sound coloration. Slide at first seemed hard, but after a week it became my ideal companion and now I do not want to have a deal with lighter one. The counterweights are removeable, you can adjust the desired weight, I left as it was, it is very convenient. Thel case is very robust and equipped with straps to be worn like a backpack or on one shoulder. As well as convenient handles on the top and the side. But it is too large and will not work as carryon on the plane. So if you fly with an instrument, you have to take care of more compact. I packed it in Gard Bags. Finally, trombone looks surprisingly nice, pleasant to the touch, and it makes me want practice 24/7! Excellent professional level intrument for those who has no money for a modular one.