i'm sort of in between on this. I really don't like using the graphical debugger in xcode, but it is great when you have to dig around on multiple threads. I used ddd a bit, but always ended up just reverting back to cmdline gdb.

typically though, the performance of the graphical debugger is pretty lousy compared to commandline, and (in the case of xcode) it doesn't do everything. Knowing how to navigate yourself on the commandline is very beneficial, especially when you need to [for lack of better words] rip the shit out of something, inject chunks of memory, or forcibly reproduce bugs that don't happen often.

That being said, I have heard that visual studio is amazing. For some reason I've never developed on Windows platforms so I've never had the opportunity to use the debugger.

I'd be curious to hear other people's opinions/expereinces. I'll freely admit that I use the tools I use because I've grown comfortable with them.