Hello, an welcome!
You are definitely on the right track wanting to RF your son as long as possible. :thumbsup: Most of us here aim for anywhere between a min of 2yrs to 3 or 4yrs. You have a number of great choices available now which will help you reach your RF goal. In general, you want to look for a seat with a higher RF weight limit, and also one which has a taller shell since many children will outgrow a seat by height rather than weight. High cost does not always equal the best seat, either, there are a range of choices which work well. :thumbsup:
We have a list of higher capacity seats here, look at the "Convertible seats in Canada that RearFace past 30lbs" list:
http://www.car-seat.org/showthread.php?t=36056
The current most popular suggestions when cost is not a big issue are the:
- Sunshine Kids Radian seats (you get excellent limits in both height and weight but
at times has installation or vehicle-fit issues)
- Safety 1st Complete Air (won't fit small babies, not sure if your son would be tall enough to fit in the bottom slots yet, the FF weight limit is lower so not as good for top-of-weight-curves kids)
- Graco MyRide (not the best choice for tall/long kids since the shell is a bti shorter, and I would try out the FF install to see how well it fits)
- and for lighter/average kids, the First Years True Fit (tall but only 35lbs RF weight limit, the anti-rebound feature tends to be well thought of).
I have tried out all these seats, but haven't used all of them RF for any length of time besides the MR and the TF (briefly), and have the least experience with the CA since I don't own it. I like them all. Maybe you can have a look around the reviews, etc and see if anything stands out or if you have any questions. Ideally, you would want to find a store locally which would let you test out the seats in your vehicle and try your son in them to see what fits, what you can install well, and what you personally prefer. Toys R Us and some local baby boutiques allow trying out their demo seats.