2000 and later model year Crown Vic shocks are a common replacement shock for 2" lifts. Inexpensive and provide a good ride. You can buy more expensive ones, they are out there. Guess it depends on what you have to spend, what you want to spend and what your intended use will be. The Crown Vics work fine for most applications. There are others on the market, as you are aware.
If you aren't sure, save your money until you know. It's so easy to buy one thing only to discover a month later what you thought you wanted and bought is not what you really needed and you end up spending more money on the same parts which takes away from other purchases for your truck.