We have an Evenflo Triumph and I LOVE it... however, the MyRide would be a better choice and will last MUCH longer than the Triumph...
Another seat to include in your options would be the TrueFit.... with the Myride vs the TrueFit... the Myride is a bit better for shorter kids that are a little heavier and the TrueFit fits long skinny kids better. Both seats forward face to 65 lbs... the Myride rear faces to 40 lbs, but if your kiddo is tall then they outgrow it in height before weight, so the 5 extra lbs isn't a big deal. So it depends on the build of your kiddo.
With the Triumph, we still have our 18 month old rear facing in it and he'll be able to stay that way until he's at least 2... and he's 35 inches and 26 lbs... he'll outgrow it in height first (if he had the Myride he's also outgrow it around the same time, with the truefit he could stay in it longer)
at 7:23 AM on Feb. 6, 2010