I think I've narrowed it down to the Sony Walkman NW-A35 and the Cowon Plenue D. I originally wanted the Cowon due to its apparently better overall sound quality and battery life. However, I hear there is a file limit on the Cowon that limits it to about 16,000 files and 8,000 folders with a 128gb limit. From my understanding, the Walkman doesn't have this file limit and has a slightly higher GB limit of 200gb. I'm unsure if the Walkman has a file limit, but I do know the walkman has a better and faster interface. Even though it's battery life is a lot less than the Cowon, the Walkman also has about 30hrs of battery life playing FLAC files (which is still better than most in my book). So I guess my biggest concerns are file limits, interface issues, and if my conclusions about GB limits are correct. If anyone has suggestions for what they think would be a better option for me, I'm all ears! Also this is my first post, so I hope everything is done correctly. Thanks for the help in advance.