Best HDR program?

Check SNS-HDR, it is an excellent piece of software, especially if you are up to natural looking HDR. SNS -HDR Home cost 30 euro, while PRO is 85 euro. The difference is that Home can't do batch processing and can't be used for a commercial purpose. There is also free LIGHT version, but you will be limited to presets only. It's the best HDR software I ever used. ( still have Photomatix and tried Nik HDR)