We run em in our WJ (3 of them). I'm sure it's similar to the JK. Very tight. We've messed with it every way possible. The thing that sucks is our 4 year old can buckle herself in the van, but in the Jeep she can't because the carseats touch each other and she can't get to the buckle. The real trick is to keep your floor boards clean of stuff because chances are your wife will have to actually climb in to buckle the middle guy/gal. I just stand on the rock slider or rocker trim, but my wife swears she has to get in to buckle the middle child. There's no easy way about it no matter how you do it, the hardest part is buckling the middle kid, but you get used to it. Luckily we don't use the Jeep much on the streets, so car seats stay in the van most of the time. And as far as wheeling with a baby. Easy trails only. We tried one moderate trail, and even tiny bumps just pissed him off and made all of our rides less enjoyable.
And as far as brands, we have 3 different ones and I don't remember the models. Cheaper ones from Walmart though. 2 are fairly large/wide.
isappointed: got a great deal since it was from a family member though
