Depends on your budget really. On the average, a celeron performs 200Mhz slower than it's PIII counterpart.
If you plan to overclock, get the "E" cuz it's default is 100Mhz thus you can "easily" raise the FSB to 133Mhz and beyond. If you're more of the safe and sound guy, then get the "EB" which has 133MHz default.