Wallander Instruments is a newcomer in the market of the ultrarealistic acoustic emulations - their first product, Brass 1 solves the brass problem of the electronic musician completely. Brass 1 is the first part of their product line called WIVI - on their website they write a lot of interesting statements of the brass topic so I won't tell any more but the price: 600 USD. Try the free demo at first, of course.