I can see a storm coming from this...
Anyways, the way I see it is the iPod is the cheapest, most practical, high capacity player out there and that's why I have one. If I cared only about sound quality in a DAP, I would get a HiFiMan, but I believe you have to make sacrifices for the sake of practicality and usability. Most of my collection is also in ALAC, although I did convert it to WMA Lossless to use with my Zune, which was kind of a project, so for me it's easier to just stay with iPod. As far as Cowon vs. iPod, I believe both are very usable, but Cowons almost need EQ to sound their best, otherwise they sound very lifeless, so EQ'd Cowons are better sounding ; Non-EQ'd iPods are bettter IMO, and even for the x7, it's still $319, when I got my classic for only $200.
In short, it's all about personal preference. As far as raw sound goes, most consumer PMPs will sound the same and it boils down to UI and build, which btw except for the aluminum back, the iPod is great in that area, glass screen ftw. Now, if you like BBE, SRS, and other sound effects, and customizable EQ, Cowon would be for you. If you don't care/don't use EQ and are going to use an amp, iPod is for you.