Originally Posted by dreamliner77
Is there a reason to use BD-Rebuilder vs Handbrake or just storing DVD/BD ISO's?
Direct to ISO of the original disc (i.e. no compression) take up too much space.
I started using BD-Rebuilder years ago when trying to shrink Blurays to fit on a 25gig BDR, or shrink to fit on a DualLayer DVD (i.e. DVD9) disc, and I've stuck with it because of how well its worked. BD-Rebuilder can output BD-25, BD9(dvd9), BD5(dvd5) formats as well as custom size, ISO's. So if you're looking to keep everything but make it smaller.
I could never get Handbrake's output to look clear/sharp.
BD-Rebuilder works, output always looks great, and I found its GUI easier to use, and its options simple to understand. It lets me EASILY pick different output options, different titles/playlists (If I'm doing movie only), handles embedded Subtitles to SRT files (which my BD390 and BD570 needed). It handles embeding subtitles into the MKV files, including FORCED. It can output 3D blurays as HSBS MKV, and it does 3D -> 2D conversion, etc. It handles the different audio tracks and formats, can process to remove HD audio if you wish.
BD-Rebuilder is "donation ware" (donate what you can/want to in order to keep it going), so its worth trying for yourself to compare.