Neither. Mimi is too weak for me. I FINALLY bought Matryoshka today though! I'd def. say go with something that's higher quality and stronger. That's just my own preferences though. Zini Deux is my next buy, but it's been outta stock for so damn long that I'm buying elsewhere next month if it isn't back. Those seem like MUCH better choices than this. The Form line looks nice too.
Salsa! I have both. Mimi has her vibrations throughout the entire egg shape and the vibrations can't be pin pointed to one area, so she does no good for me except those days I am sensitive. Salsa is awesome. It works for me every time and the vibrations are all over the toy, but with the pin pointed top they can get the exact location and apply pressure to it.
I dont miss any texture here, and because it is so smooth I have never had to use any lube with this one. If you are comparing salsa and Mimi. Salsa is stronger and has very pinpoint stimulation. Mimi is quieter, and spreads the stimulation out broader. It is still what I would consider pin point, just not as small as salsa. I like the way Mimi feels better. It all depends on what you like. We are all so different!