I do as much of my development on a mac as I possibly can, which sucks at the office because I'm forced to use wintel. MacPerl (pre OS-X) had a lot of gotcha's, but I haven't run into a single one on my powerbook.

Some modules are hard to install via CPAN, specifically those that require certain libraries. Math::PARI comes to mind. Certain other modules with external dependencies can be helped along w/ fink, a very freebsd-ports-ish way of installing OSS libs.

All in all though, for all the annoyances of Windows + cygwin, my inability to find a comfortable working linux/bsd distro/window manager to install on an intel machine, I can't help but wholeheartedly recommend a few extra bucks for a mac.

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