As someone said earlier, it's all about personal preference. I currently play on a 30-odd year old Schilke, having rejected the Xeno! I found the Xeno's tuning to be shocking, in fact worse than a Schilke and they have caused me endless problems with G#/Ab for years - even to the extent that I used to have to play it on 3rd with the trigger right out - I hated that note! I really was quite disappointed with the Xeno, it didn't blow as nicely as I was lead to believe, the tuning obviously and it sounded more trumpet like to me. After a few weeks I raided the band room for anything else and found this old schilke - it's not in the best condition but it plays really nicely, no contest really.
Try as many as you can and go for the one that feels the best for you.
Try as many as you can and go for the one that feels the best for you.