I’ve been enjoying Saturn.emu on an Android tablet for a few years, while it’s not a well known emulator, which I’m quite surprised, it’s based on Mednafen Saturn and runs all Saturn games at full speed in a mid range device, at least, all games I tried run quite well.
Also, using Beetle Saturn (Retroarch core) and enjoying the Retroachievements that encourages me to replay a few classics, I’m currently replaying Tomb Raider and having a blast with the nostalgia, so many memories playing this one all the way trough at 11yo in 1997.
This core has been updated and performs so well in the same device, I can fast forward to skip loadings faster and stuff like that.
I also use the same emulator setup on a PC, but I’ve been enjoying the tablet more for convenience, with a 8-Bit Do Pro 2 gamepad.
On PC I use a PS4 gamepad (never bought a PS4, but the controller is great for general use).