You will have less overclocking room with the 933, due to the fact that 933 is all ready 133 on the FSB. The 1000E and EB are expensive (over $440), and relatively untested for overclocking since they are so new.
For price/performance, a good deal is the 700E. This chip seems to be easily overclocked, and it's available for about $150. I have one that yielded a stability certificate (13hrs+ with 0 errors) at 980MHz;140FSB/35PCI/94AGP. This with an Orb for cooling. Even at 133FSB, this chip will post 933MHz.. a respectable number. I bought 2 800E flip chips with identicle factory and ID (Philippines/SL4CE). One of them is posting a phenomenal 1066MHz;140FSB/35PCI/94AGP, but the other won't get past 992MHz;124FSB/31PCI/83AGP. The 700E is running faster than that. OCers are getting more out of the 700E, but rarely above 1GHz without extraodinary cooling
Since you are using the CUSL, it is obvious that the socket/slotA option responses are useless to you.