I am currently splitting time between the Alessi model Edwards, and an Alessi model Prototype.  I like qualities of both trombones, but in the Orchestra the final Alessi Model works awesome.  It has a sweet sound and plays even in the upper register and lower register.  My prototype is very good for auditions.  It does not get as sweet of a sound, but no other trombone has as fast of an articulation and as clear of a sound as this trombone produces.  From what I can gather, the prototype is a lighter trombone.  The added weight of the Alessi model gives it the sweet sound, but it kind of hurts the articulation I need for auditions.  I really like them both and enjoy figuring out which trombone to use for certain occasions.  

As far as the Alto goes, I play a Sterling Silver Glassl and its the best orchestra sounding alto that I have ever heard.  I have been given calls for the last couple of years from people trying to buy it or borrow it.  I don't think I will be letting this Alto out of my sight.

 

As far as mouthpieces are concerned I stick to the old Joe Alessi 3 series from Greg Black. They don't exist any more, but I am sure if you called Greg, he could let you know what the specs are.  Its a little smaller than a 2g rim, on around a 5 cup.  I play mostly the JA 3.25 with a .295 back bore. (I find that the bigger back bore allows me to blow easier).  When playing a taxing symphony I play the JA 3 .295.  This is a shallower cup and helps with stamina and the upper register.  If I am playing second or a Mahler 3 like piece, I pop on the JA 3.5 .295.  This is a bigger cup and gives me the big sound I want and allows the lower register to speak better.  For concertos, Bolero, and other extreme high playing I use onthe JA 3 with a standard back bore.   Some think that I use to many mouthpieces, but it seems to be working so far.

If any of you have any questions just send me an email and I will do my best to answer them.