I can give you a general diff bet Prosumer and DSLR..
if you want to take good video, with AA batt..go for Prosumer (S7000 in this case)
if you want to have full control, have the $$, then go for DSLR (S2 Pro in this case)
I was deciding between S7000 and D70 then, but the Video capture capability pulled me over to S7000...