PL/SQL as an alternative to C?

I am currently working on a project which involves the development of batch and interface programs that would normally be written using C with ESQL or OCI calls. Since Oracle offers the alternative of PL/SQL I wonder if any of you can give me ideas of relative benchmarks of a PL/SQL versus C with ESQL for cursor processing. Is there any size constraint involved in PL/SQL performance. Is PL/SQL known to have many bugs. Any information that would help direct me in choosing to develop in C versus PL/SQL would be most helpful.

		Thank you,
				Mark C. Jones
				c/o University of Minnesota
				MCJ_at_MOOSE.CCCS.UMN.EDU