Future Download Formats...

I'm working 24/7 on the MP3/VIP Vault and I've reached a crossroad in regards of what file format to use. I'm currently thinking about using WMA Encoding for all trance[]control Music Downloads - Mainly due to the extreeme compression and high soundquality, however since you guys will be the end users - What's your opinion? Please vote for whatever option you think would be best, and feel free to drop a comment saying why you voted the way you did. Best, Alex