The Strykers are really nice, a bit cramped, but nice overall. They'd be even nicer if I had managed to actually crawl OVER the driver's seat. the tunnel leading from the rear to the driver's compartment was a bit tight, about 3/4 the size of a B25's tunnel to the nose gunner position. I didn't get to feel the movement of the Stryker, but from what I saw of it, it wouldn't be a very smooth ride.
The light armor of the Stryker definitely increases it's mobility, but at the same time, it increases the chance of everyone inside being killed by a single RPG.
Obviously when it was being designed, troop comfort was not a very big concern, as I (standing at about 5'10") had to bend over to not hit my head while sitting.
The only weapon on the Stryker can be changed, which could be a good thing, but with the lack of stability on the vehicle's part, artillary weapons such as mortars and 102mm cannons require that the vehicle be stopped in order for the shot to be even 50% accurate.
The gunner in the stryker remains fully inside the vehicle, relying on periscope-style views, going about 10 different directions, to find a target. After finding the target manually, the gunner uses a computer screen linked to a small camera on the weapon to aim at the target. This station takes up about 20% of the total area insinde the vehicle, cutting down the room for troop transport.
With the gunner station and extra storage all filled up, the vehicle can fit only 6 fully geared troops.
Personally, I'd prefer the Strf 90A for troop transport, while using the Stryker for Medical transport and light assault, not troop transport.