6230i has a decent camera,as good or better camera then 7610. It also has a better resolution then the 7610's screen, however, it's very small and it's not fun seeing ur pics on such a small screen. 7610 is symbian, 6230's not.
I think the 6230i, mainly becoz of the screen, hasn't made a big enough an improvement from the 6230 for a 6230 owner to want to buy it. Just my thoughts.