I didn't find the G37's seats as comfortable as the 335i's, but the thigh support is better (though I'd rather have better lumbar support and get rid of the G's thigh shit altogether...got a little uncomfortable).
The new M37/56 supposed has awesome seats.
E92 335i: Space Grey|Coral Red|Aluminum Trim
Hold out for the BRZ STI or... Rocket Bunny FRS. Update: Scratch that. I've got a 2015 5.0/6MT with my name on it.