Yes, of course the BD drive would be slower to rip from because the disc spins at a speed to read the disc, which is limited. About copying from the disc to the HD uncompressed at BD50 is good. But I still maintain that backing up from the disc to the HD, uncompressed, then playing the file from the computer to a projector works better than from a disc drive.
Still, I consider that using a software program like Cyberlink to play back from the computer to the projector (or TV if you wish) and using only DVDs, a lot of which are dual layer, copied to the HD, then playing back from the HD with Cyberlkink choosing upconversion to 1080p, yields remarkably clear and clean video, comparable to BluRay. So why bother with BR at all, when DVD is so much quicker.
Another thing that I do, instead of using the HD to play the movie, I transfer the folder to a USB 3 flash drive. It take less than 2 minutes to copy from the HD to the USB 3 FD, then the say 2 hour movie does not wear the HD at all. I keep the folder of the movie on the HD as back up. My HTC also has a SSD, so when I play back the movie from the HTC with SSD and the USB FD, all is solid state and I never have hangups or freezes like I use to have when playing from a DVD drive and DVD copy. Just my way of viewing movies and it has worked very well for me.