I've found from my own past experience that while SSF has improved massively in recent times, there are still a handful of games that run better in earlier versions - some won't even work at all with later revisions, so for that reason I'm forced to keep earlier builds to ensure maximum compatibility with my game collection. Also, specifically in regards to SSF, why is it that many multi-title demo discs still won't boot every game they contain? This problem also applies to certain compilations, and even Die Hard Trilogy (not that I'm in much of a hurry to play this, though it would be nice for completion's sake, I guess)! Also, the resolution error where a select number of PAL games have a significant portion of their lower screen missing needs fixing sooner rather than later, if possible in the first place...
When I was recording footage from the first partner club disc I had to do it on real hardware as no version of SSF I had would run the content, it would shop the startup anim and ood to the discs menu no worries.
This is Lotus 2 running on the CD32 (a 240p game) output to a Sony KDL-40Z4500 40 inch LCD screen. (this is NOT emulation!!) I'm using the XRGB3 in tandem with the DVDO Edge video-processor. XRGB3 provides the emulated scanlines and up-scales 240p to 480p MUCH nicer than the DVDO Edge. Drop shadows and all effects are handled correctly, deinterlacing is NOT applied! The DVDO Edge scales the rest of the way and also zooms the picture reducing borders. The end result is extremely pleasing! I especially love how I can zoom the picture to fit better without breaking the aspect ratio. Total input lag is under 10ms (not including the TV).
Then again, my PC Engine has never worked with this setup, so CRT's still have advantages, add to that the fact they are totally 100% input lag free too, finding a large HDTV with low input lag gets harder and harder (my set as 0 to 10 ms in gamer mode which is exceptional and the reason I bought it, despite my dislike for Sony products )
That's an excellent article & does a great job of explaining what emulation involves. I'd love to read a similar article by the guy who coded SSF. I bet debugging a Saturn emu puts you in a whole new world of pain.
I have been playing a lot of emulators on the DC, currently the Atari St. For some reason Atari machines emulate pretty well but Commodore ones are less great and I would love a decent C64 and Amiga emulator.