Can anyone tell me anything about how this foonf might compare to say an advocate or blvd? Size, height, how much front to back room they take up comparatively. I see that the foonf has a high profile. I have tried to search the forums and google but haven't had much luck. I am also wondering if the headrest can be used in any position rf and if the height requirement is still based off of the shell or the headrest. Ds outgrew his advocate about a month ago and to say I do not have the radian love is the biggest understatement of the century! Can't stand that thing, and it won't stay installed at the right angle….it will be fine for a few days and then it starts tilting back and resting on the passenger seat. I am also really missing my front passenger leg room that the advocate provided and the xtsl took away!! Dh and I are willing to shell out the $$ to keep him rf as long as possible since he's tall and doesn't gain weight quickly and won't be 3 until the end of Oct. Any info would be helpful! We have a 2008 Sienna if that makes any difference. Also….anyone know when a tech discount may be available or what it might be?