I just ordered my 3rd car seat...and I only have one dog...and one car
My first was a Pet Gear medium in grey to coorindate with the Ford Mustang's interior, I had at the time. ZoE loves it. The sides are firm, so she can stand on them and look out.
But then I read all the raves about Snoozer here on YT, so I bought one of those (medium lookout II with drawer). Turns out the medium snoozer is a lot bigger than the medium Pet Gear! And ZoE didn't like the snoozer because the sides aren't as rigid, so she'd go to stand on them and they'd move/giveway and she'd freak. So the snoozer came inside and is used as a raised doggie bed next to my desk.
Now I've bought a new car with black leather interior, so I'm not really feeling the grey petgear seat in it. So I thought about ordering a black one. Then I thought, why not get the bigger one, so ZoE is more comfortable for long trips (which we take a lot as both my kids are across the other side of the state, 1 in college, 1 just graduated college & accepted a job there). So, just the other day, I ordered the large pet gear in black. It should be here anyday!!!
Here's another thread about car seats with more info:
http://www.yorkietalk.com/forums/gen...-tagalong.html