I recently bought a Cowon a2 from amazon for $312 USD shipped. =] It just came today and i'm loving it! I fell in love with it reading the reviews online, and it looks so beaaauutttiiifulll O_________________O Just looking at it i think it was worth it.
I'll post a full review later once i've played with it some more! I can say right now that it is 01930453128574817032x better than the 30g ipod i bought last month =__________=
EDIT
ok, so here's a picture of the cowon in case you haven't seen it.

THE GOOD:
Long Battery life: the website claims 10 hours video and 18 hours audio, so far i've used it for about 4 hours worth of video and audio on the loudspeakers and it has only gone down 1 notch (out of 3).
There are speakers so i can share my music w/ more than 1 person, and it's not too big of a problem if i dont' have earphones on me.
The Display: it's so pretty....the screen is huge! (4-5 inches diagonally) and the settings are easy to use. Everything looks so professional and high tech.
Accessories: It came with a really nice leather(?) carrying case, a AV out/in cable, a usb, a AV adapter, a USB thing where you can directly connect 1 USB to another, and a line in recording cable.
Functions: i was really amazed at all it could do. This is my first high end PMP though, and i had a ipod video before this, so i guess i can't really judge since i've had no prior experience. But it can record video, audio(voice and radio). So far the quality is pretty good, but again, i haven't had any other PMP's to compare, but the quality for recording voice is pretty good, it can get sounds from pretty far away, and the video/radio recording is decent too. Another thing i really like is that i can hook it up to the TV and play it on there, so i can watch my dramas on my big screen instead of my computer screen without having to burn it on DVDs. Another thing i really like is that it takes softsubs, as long as it's in the same folder. In addition, the loading speed for putting files on is really fast, about 5 minutes for 1 gig. The A2 is pretty compatible but i still had to convert some of my videos because the codecs weren't compatible. It came with a converter, and the converter was pretty fast too, it took about 1 night to convert 15(?) gigs worth of videos. But that's because it for WMV codecs it only takes 9 and above, and a lot of my videos are old so they were in WMV 6-8 codec.
In addition, the screen resolution is reallllyyyyy nice, and even the sound coming out of the speakers is decent, although the bass gets kind of distorted if you turn up the sound all the way using the speakers.
THE BAD:
Sometimes it freezes, and then you have to stick something sharp and pointy into the reset hole. But this is partly my fault, since i change my mind about what i want to select, and before the thing can load i decide to go somewhere else, and it freezes because i press to many buttons at once. >.<
The instruction manual was waay to vague, so you kind of have to figure things out for yourself or go online and research. Finding the answer was really easy, since they have a support forum on their website, and their support employees are really quick at replying.
It's a bit on the heavy side, but coming from an ipod user i think i'm being biased. It's much heavier than the ipod video, but that's a given. But the huge screen makes up for the extra weight and size. It's pretty not all that heavy considering i once borrowed my friend's Creative Zen M and i thought that was pretty bulky too >.<
CONCLUSION
It was definately worth it for $300. For only $50 more than the ipod video and zen M, i highly recommend this.