Symphonic samples

Hello everyone. Im planning to buy Logic Pro with the Jam Pack, but im not sure. I work in music in Symphonic Rock Musicals (such as the Phantom of the opera for an example) and i need either good "modern" instruments like Electric Bass, Electric guitar and Drums, but what im interested in is the Symphonic Orchestra part. I heard a lot of samples, from Kontakt to East West Quantum Leap. I dont like EWQL much. Kontakt has grat string part, but brass are not that good and all Woodwings are solo. Is there some Demos (mp3 or videos) that i can hear for the Jam Pack, i need to give a listen to the "Classic" section. Both on the Kontakt and EWQL or Vienna Symphonic's site i heard some samples, but i can't find any sample for Jam Pack.
So the question is: Can you link some? It's important that there is a huge part with the classic orchestra 🙂

Thanks in advance to anybody who will answer