I really like this trombone, it's well built, feels like a quality instrument and, to my mind, priced very competitively (the price has increased somewhat since I bought mine). Yamaha have clearly invested heavily in brass instrument design & production over recent years and their Custom Z ranges don't disappoint (I have a Custom Z tenor sax too which is also a fabulous instrument).
I initially wasn't too interested in the interchangeable leadpipes, however, after trying each of them a bit I'm now actually appreciating their different qualities.
I tried several other trombones before purchasing this one, even sending one all the way back to Thomann from the UK (I'd like to thank Thomann for such generous customer service, especially as it was sent back right on the verge of its Return expiry date).
For a small bore instrument without F attachment I think this bone is hard to beat.