ok. first you want something with a frame. not knockin on the cherokees cus i currently have one that i am building into a rock crawler, but a frame is simply more rigid and will perform better. 2nd, dont get anything with a bow tie. mainly cus they suck. if you dont believe me ask jrraw23, he has had tons of experience with full size chevys and still hasnt learned that they sucks
. 3rd you want something with a decent amount of wheelbase or something that you can stretch easily to get a desired wheelbase. and last you want something that has a decent amount of power and torque. i am not saying that a samuri will not do good off road because i know they will, but it gets to a point where you have to start doing some major mods to them if you want to keep up.
so that narrows it down to a cj, yj, or tj. when you say you are looking for something between $5K and $10K are you talking about initial vehicle cost or with mods. if with mods and for simplicity i would say go with the yj because they do have one of the best platforms to build from, which i believe may have been already stated, they are typically cheaper than most cjs because a lot of people think they have a gold mine, and of course they have leafs springs which will make a lot of things much easier, like stretching the wheelbase with minor mods and bolting up 1 tons much easier.
now if you are just looking for something with an initial cost of $5k-$10K, then by all means get a TJ. i am biased towards them but everyone knows they are the absolute best off road
and in the long run they end up looking the best and there are so many things you can do to them and the girls love em, so getting noticed will be much easier and they will be more likely to get into your rig than they would if you have a samuri or full size chevy.
i know the last part has nothing to do with a good trail rig but sometimes its the little things like that, that help you decide