I have archived .iso files and blu=ray volumes made with AvidDVD. I've gotten used to the program but it's sometimes unreliable. I also have used Adobe Encore in the past. I burn standard def to double-layer DVDs and blu-ray to 50gig double layer. If NXT Pro ends up being a program I can use to author I'll use it but, at this point, I'm looking for software to burn the image onto blu-ray without error whether it's .iso or a volume..