When it comes to upgrading your Jeep, there are a few things to consider before making a decision. The first thing you need to think about is what you want your Jeep to be able to do. If you're looking to take your Jeep off-road, the JK may be a better option, as it has more ground clearance and is more capable in rough terrain. If you're primarily looking for a vehicle to drive on the street, the JL may be a better choice, as it has a smoother ride and more features than the JK.
Another thing to consider is your budget. The JK is typically a bit cheaper than the JL, so if you're on a tight budget, the JK may be a better option for you. However, keep in mind that the JK is getting a bit old and may not have as many features as the JL.
Ultimately, the decision of which Jeep to upgrade comes down to what you want your Jeep to be able to do and what you're willing to spend. If you're not sure which Jeep is right for you, talk to a Jeep dealer to get advice on which vehicle is best for your needs.