I have just released a resynthesized Marching Band Horn expansion pack for Caustic 2. It costs $1.30. There's a free demo of 7 PCMSynth instruments and the full version adds 30 for a total of 37 instruments. Most are multi-sampled.
For more info, you can view the PDF here:
http://www.lesproductionszvon.com/do...n_Caustic2.pdf
It's available HERE with my other expansion packs.