Had some FLAC albums but iTunes wouldn't take them -.-
I use ALAC on my CD rip collection, when syncing to my portable devices I let iTunes down convert to 128k to save space.
I use XLD for ripping.
Use Max to convert FLAC to ALAC
I only use my car speakers and my earbuds to listen to music from my phone. Higher quality files than what iTunes sells really won't be gaining me much.
The nice thing about FLAC and ALAC is that they are both lossless formats. Once you've converted your FLACs to ALAC, you can even delete the FLACs; you won't lose a thing. If in the future you move to a platform that doesn't support ALAC, but does support FLAC, you can convert them back and be right where you started.
Use FLAC for my main collection and use mp3 320kbps for mobile devices