My gf is about to get a new road bike and we are looking at a shoe / pedal combo that will work for both the bike and spin class.

I assume most spin classes use standard SPD? If so, I suppose an SPD pedal for the road bike combined with an MTB shoe w/ a stiff sole would be the best combo? I was looking at the XT M785 pedals as they have a full size platform + SPD cleat.

Recommendations?