I ended up going with the Securekid 400. It will get used at least once a week by a 5 yr. old child with a short torso. Her mom has put her in a booster and she has a terrible fit-shoulder belt is no where a good fit (belt is off her shoulder). I won't put her in that condition in my car, even though her mom knows my safety rules! Anyway, because it won't be used everyday, it's narrow and light, I'm going to keep it and I have other little people in my car who use boosters. I'm giving my Symphony to my neighbour.
The surelatch install was great, very easy. I always hate putting the tether strap in my car. There is a very short distance from the seat to the clip, so I have to really play with it or install one side of the seat, pull strap tight and then place it in.
If anyone in the Vancouver area wants to check out the seat, just pm me