Bestop trektop NX which is a framless top.
It looks great. The side and back windows come off to make it a safari top.
It will not fold back so it takes a longer amount of time to take the entire top off.
Some people do not like the fact that the slope (fast back) takes some of your cargo room away. I had a fast back type top on my TJ and you really don't notice the missing room.
You can find it from $600-$700
Bestop Super top NX which is a Frame top and almost an exact copy of the OEM top.
The side and back windows come off... its not quit a safari top with the windows off but its pretty close.
Seeing as this is a frame top it will fold back and rest in the rear of the Jeep. It has velcro straps that you use to keep it from moving around while its in the folded position. After you do it a few times it takes one person about 2 minutes to take it down or put it up.
You can find it from $950-$1100
Or you can get on craigslist and try to find a new or like new OEM top which like I said is almost exactly like the Super top NX for $500-$600
One thing to remember like Filthy-Beast said you need all the hardware to go with the tops. If you get one of the Besttops above they come with everything you need but if you try to find a top on craigslist be sure to get the door surrounds, tail gate bar, and brackets for the roll bar with the top.