So I'm without a company car now so I'm in the market for a Jeep Wrangler. I'm just looking for something in the $10K range right now, my wife gets her new Jeep Unlimited in the spring

she drives 4 miles a day so better she has the new one!!
Anyway what should I stay away from?? I've found a few with under 100K miles but they all have the 4 banger which is ok with me but not sure if they are good or bad?? I'm have a call into a friend of mine that is a Chrysler mechanic but everything to him is junk except his his new Hellcat!!
Anyway thoughts??
Also anyone have a Jeep?? Let's see some pictures??