I had a My RIde and a True Fit. Because of the cup holders, the MR is a tad wider. With the TF center, I could flip the side seats in my van and it would just rib the TF. With the MR installed center, the flipped seat would try to break off the cupholder
The insdie of the TF is wider. The MR cradled Sofi better. When she was asleep, she could just lean her head to the side. When she slept in the TF, the sides were too far away so her head just flopped. I know it's not a safety issue, just a Mommy comfort issue
I needed a rolled towel to install the TF, and it wasn't 45*. With the MR, I needed nothing to install and it was 45*. Sofi's older though and doesn't need a 45* angle.
The MR installed easier with LATCH than the TF did because it had no lockoffs. Just clip the latch hooks on and tighten.
The TF has a continuous harness. So I didn't loosen or tighten to put Sofi in and out. I'd just pull 1 side longer, then the other. The MR doesn't have a continuous harness, but I still didn't have to adjust each time. I just put her in and out w/o loosening. For comparison, I also have a Titan with continuous harness, and I do have to loosen the harness when putting her in. Not sure why it doesn't work as well for me as the TF. :shrug-shoulders:
The TF has a much taller shell, but lower RF weight limit. It has the same FF weight limit, but taller top slots than the MR. The MR also installs very reclined FF. I'll see if I can find the thread where I posted pics of it....
ETA: Here is a post with pics of Sofi in it FF.
http://www.car-seat.org/showpost.php?p=854117&postcount=7 I did have pics of J in it FF, and it offered him good leg support.... better than the Vivo