Using bsnes and the CRT-Geom shader and NTSC filter options. Imo it looks as close to what I remember a CRT looking like. CRT Royale is nice but the performance hit isn't worth it plus from what I read it looks the best at 4K.
RIP byuu your work in emulation was great.
I've never messed with the pi but it's a good option too. Of course nothing can beat the real hardware but you can come pretty close with emulation.