Thank you ladies! I ended up getting the Radian, they are so easy to install compared to the P&T carseats.
For those who are interested here is is installed rear-facing in our car for our 2yo - it is on a greater angle than it would need to be for a under 6mo. If we wanted to have it on the 45degree angle recommended for under 6mo it would need to be in the middle seat so the top rests between the two front seats.
And like chuffed mentioned, no issues at all installing forward facing.

Edited by kyromaniac