Here are some great message boards for car seats and strollers. I've gotten tons of advice from these boards...
This car seat board has some car seat technicians who can help with any of your ?'s... and of course there are many parents who can give advice as well:
http://www.windsorpeak.com/dc/dcboard.php?az=show_topics&forum=13&page=
This is a great stroller board for anyone wanting to know about specific types, makes and models... lots of great advice here too!
http://www.windsorpeak.com/dc/dcboard.php?az=show_topics&forum=14&page=
This car seat board has some car seat technicians who can help with any of your ?'s... and of course there are many parents who can give advice as well:
http://www.windsorpeak.com/dc/dcboard.php?az=show_topics&forum=13&page=
This is a great stroller board for anyone wanting to know about specific types, makes and models... lots of great advice here too!
http://www.windsorpeak.com/dc/dcboard.php?az=show_topics&forum=14&page=