As a general rule they are too tall for the seat when their eyes are level with the back of the shell. He ezycombo is about 10 CDs higher torso wise than the maxi rider when I measured Connor in them side by side but that was with the new maxi rider seat.

Ah ok thanks hmmm I will need to take him with me then and have a play! This could be interesting will come home with a heap of things I don't need LOL.
Did you buy the evycombo?? and are you happy with it if you did? Is Connor comfortable in it.