It was pretty funny seeing some of the replies, as they seemed "reasonable" and nobody attacked. I've been on hardware geek sites for a bit and nobody would mention anything like streaming, and the use of a phone would also "require" the use of 18 different DAC, amp, and headphone combinations. :-)
As for me, I've had to give up on conventional portable devices because the best, and most reliable sound I've found has been my Galaxy Note 3 using a FiiO E18 Kunlun DAC/Amp with AKG Q701 or (shocker!) Bose QC15 headphones. I've been slowly re-ripping my library and replacing oxidized and damaged discs with new ones. I was going to use straight AIFF files for all my normal CDs, since my music production and DJ software supports those files natively, but I'm going to FLAC since Android is a bit "dim" about AIF/AIFF files.
Since I got the E18, I've been really, really happy with the build quality of it, and figured I'd go for the X5 myself. This will let me leave some "basic" playlists on my phone along with more videos, and let me review stuff I'm working on with the X5. Plus it's WAY more consistent to sync with the cards using readers than the different Android devices "interpreting" the inbound sync traffic and taking a few passes before getting the playlists right. Plus with Google not being big fans of directly removable storage on their own devices, and the vendors taking FOREVER to make 64 GB devices widely available (much less go to 128 GB or more built-in) I think I'll just stick to fast microSDXC cards that I can use in just about anything else with an X5.