I have never ridden in a Stryker but spent a great deal of time in a Bradley. IGoing cross country (even in the desert) in a Bradley is like being a pebble in a tin can that is being shaken. We were exhausted and/or bruised on every sortie. And that was before we dismounted. From what I hear, the Stryker is a lot easier to ride in and it is considerably quieter than any tracked vehicle. It's quietness is a great asset in a raid.
Yep, the easy ride is a definite plus for the Infantry. OTOH, it's your weapons platform when you dismount. It would be a b*tch pulling it out if it bogs down. A Bradley is much less likely to do that. OTOH, a Styker can't throw a track.