Which (C) debugger to use?

[Esmail Bonakdarian]

I am trying to decide which debugger to learn to use with C on
our BSD Unix system.

What are the relative merits of the sdb and dbx programs? Is one
preferable to the other? Why? Are there any other debuggers I
should know about that are fairly standard on Unix systems?

My previous experience with debuggers has been mostly in a PC
based environment (Borland's TD and MS CV) and a little under
VAX VMS. 

Thanks for any info.

Esmail

PS: any other C related tools/programs (other than make, lint)
    that I should know about?