I went with the OSSC because it's a little cheaper, Framemeister is on it's way out, and OSSC-since it's open source-should continue to receive tons of support. It doesn't have ALL the crazy features of the FM, but since it's just a simple upscaler, it's very fast. There are issues with some SNES models not displaying correctly on TVs through the OSSC because of video timings, but people are working on a mod for the SNES that will fix it.