You can find their features in their respective threads:
http://forum.androidcentral.com/epic-4g-roms-hacks/46793-rom-trulyepic-v2-06-12-10-a.html
http://forum.androidcentral.com/epic-4g-roms-hacks/44699-rom-quantum-v2-0-0-a.html
http://forum.androidcentral.com/epic-4g-roms-hacks/46793-rom-trulyepic-v2-06-12-10-a.html
http://forum.androidcentral.com/epic-4g-roms-hacks/44699-rom-quantum-v2-0-0-a.html