Yeah, i had one before I bought my PSR2000. I really liked the styles section; they were a lot more expressive than the 2k, but not as widely appropriate. The Blues #42 is my midi file for Before You Accuse Me. The only complaints I had were the thinness of the pianos (pretty standard sound for Korg, so it's your like/dislike) and the up/down buttons for the accp. instruments. I had a hard time muting channels, but that could have been my lack of knowledge. All in all i really like the iX300. $375 US is a very good price, especially if it's in good condition.
I have some iX300 styles and stuff if you decide to buy. Drop me a line and I'll send them over to you.