Same here, but you've made a common mistake about 28 Days Later, it's not a zombie film....close enough but not quite. You see in 28 Days they just got infected and killed, no eating. But like i said....close enough. As for some real zombie films you must give these a try....
The Beyond (probably the most terrifying & disturbing zombie film ever)
Return of the Living Dead (a dark comedy-homage to the "dead trilogy")
Dead Alive (another zombie comedy but is also the goriest film i've witnessed)
check these out and call me in the morning