I think the old Emu Emulator III sample bank CDROMs are excellent. A lot of work went into those sample-banks. Until I recently re-fired up my EIIIxp, I forgot just how nice they were (and how nice real hardware sounds and plays). The 2Mb samples of strings, pianos, instruments, percussion are very musical, responsive, w/ a lot of thought to modulation control for expressiveness. Ones I have:
#10. Elements of Sound 1mb collection
#11. Elements of Sound 2mb collection
#12. ESI-32 150MB Production Soundset
#13. Dance 2000
#16. Twenty Six Studio Drum Kits and Percussion ESI-32
I wish there was a way of loading these pre-existing sample banks into a linux softsampler or translating into soundfonts. Of course, you'd invariably lose a lot of the useful programming (filters, envelopes, multisamples) that went into engineering these "pro" samples, in conversion.
Are there any linux softsamplers that can access the massive library of pre-existing samples. Or Linux sample translators equivalent to "Translator Emulator X Convertor, by Chicken Systems" which will convert "Akai S-1000/3000, Akai MPC, Emu EIII/ESi/Emax, Tascam GigaStudio 1 + 2, SoundFont, Native Instruments Kontakt 1 + 2, Steinberg HALion I and I".