Almost all of them will. Certainly any of the big ones like Ubuntu, Mint, etc. Fedora will support all of it except wifi which is a pretty simple process to get working.
The problem they might be referring to is the fact that firmware for the Broadcom wireless NICs found in Macs must often be obtained separately from the distro. I believe Ubuntu and Mint don't have this problem anymore, though Fedora did last time I used it. In any case, the steps are documented here: http://linuxwireless.org/en/users/Drivers/b43/__v183.html