I have the CRG lane splitters and like them a lot. They don't vibrate at all and you can make out what is behind you. I highly recommend them over the stock mirrors.
I have the Rizmos, they are small and have flat glass but they have a blue tint which seems to increase clarity. It takes a bit to adjust them but after some work I have full visibility. To be fair I occasionally see my arm on the left side but maybe thats just me leaning that way
I highly recommend them.
[moto]