OME will be the best for around 3in. PM Kolak he will get you the best price. I'm guessing it would be between $700-800. If you want to spend less you can go with a BB like Rough country which is a spacer lift.
OME HD will be closer to $800 shipped and is probably the best option as it replaces the coils/shocks. now if youre looking to spend a couple hundred less- get yourself a RRO 2.5" BB and some bilstein HDs, or go RC 2" BB with Bilstein HDs in the front with a rustys strut spacer and some monroe load levelers in the rear... one of those combos will be get you between 2.5"-3" of lift and great improve the ride. ranging from $500-$800.
being that its an 05 and 'pending your mileage, while youre in there look at replacing your coil spring isolators for alittle boost.
The OME HD kit would be the best way to achieve 3" of lift on the WK. I do have it on special right now so PM me if you'd like a price. If that's not in the budget, I'd suggest a 2" Budget Boost kit and some good struts and shocks such as Bilstein.
The question you need to ask is what is the most appropriate lift for your application. You could ask "what is the best lift" to 10 people on here and get 10 different answers with 10 different reasons. I'm not trying to be an @$$ I'm just saying the "best" is a matter of opinion and function. There are several ways to get 2"-3" of lift (as is mentioned above) and they all have their pros and cons. That being said - I went with the OME HD which yielded me a solid 3" of lift. The pros - replaces all the spring coils, both shocks, both struts, handles great on the road, does amazing on the trails. The cons - aside from the Superlift, it is one of the more costly lifts for the WK platform.
Do you have a V6 or V8? If you have a V6 you should be able to get about 3" higher than most of the stock V8 guys with just a 2" RC lift and some F150 MLLs, which in my case only cost me $200. You can't get much more inexpensive than that. Don't forget that no matter which lift you go with, you'll most likely want to do spacers (or different wheels) and bigger tires so there's another $700 at least.