IMO, the 2007 year is good. The V-6 is acceptable. Have a mechanic with Jeep experiance due a thorough check out before purchase. Find out if this Jeep has been used as a "Mudder". The fine abrasiveness of mud causes undue wear in places that won't show up for years. Yes, if you have to go thru a muddy spot, do it, but don't forget to wash off the underneath afterwards.
Don't put Mudder Tires on it. Too loud on the highway. I recommend the B.F. Goodrich Baja T/A (non mudder).
Is this a four door or a two door? Does it have a hard top? The two door hard top comes off very easily by two people. The four door comes off just as easy but is a little too heavy to not use a light overhead lift.
What transmission does this one have? For a around town utility car and snowy conditions the auto trans is great. For hard use out actually four wheeling the standard shift gives the engine the best chance to really work.
I have owned the CJ, the YJ, the XJ Cherokee and the JK in four door and two door. I patrolled a desert conservation area of 180 sq. miles and got paid to provide my owned vehicle. The XJ was the most comfortable. The JK four door was the best overall for serious off road work. The two door JK was the most maneuverable and manageable in tight spots. It was not real great for rear seat passengers. All had winches on the front. I kept the JK two door after retirement just because it was so handy around the homestead.
The JK four door would handle a snow plow of the right design very well. The hard top comes off in two sections over the front seats. Very nice for riding around on pleasant days. A hard top will keep out trail dust. The soft top doesn't do near the job.
The 07 and 08 Rubicon have complex four wheel drive computers that didn't let me drive while in four wheel drive low range like I wanted. I could have had that feature defeated electronically, but it would have voided the warranty. So, I sold it and purchased the JK two door in the "Sport" model and built up the Jeep to be better than a Rubicon (IMO) and as I liked it and not the Jeep engineers. I put at least 60k miles on all of them and 85k on the last two door JK.
It is very easy for a handy person to put a 3 to 4" lift on the JK. Long legged people can get in a Jeep with 3" lift without too much effort.
The 4" lift gets to be a little much getting in without a step of some sort.
Depending on how hard you are going to work the Jeep in four wheel drive, not much else needs to be done.
There is a library of info available on the Internet on Jeeps.
I miss my last Jeep very much, but at my age I just don't need one any longer.