Superdrive Type!!!!

i have a 15in powerbook titanium 1ghz 1gbram.
i need to replace my superdrive because it has a burnin problem.
does it matter what i replace it with?
i orginal have now is the MATSHITA DVD-R UJ-815.

do i have to get the same one or can i get any other models?
what other model will be good/cheap?
will a SUPER DRIVE UJ-825-C SUPER 825CA work? how can i find out?
whats the differance?

please help!
thanks