I have both for my strom. I use the givi in spring autumn and the mra in summer. The givi works much better. I'm in Scotland at the minute and because for the good weather I left the mra on, regret that now. I thought my bike felt better in 5 gear on the tre than 4 th, maybe just my imagination. A g2 throttle tamer helps too.
My old vstrom is not going the best over here, don't like the heat and lots of vibration coming through, feels real rough. And I think my seat foam has gone, my arse is killin me!