It really depends what fits your style. You may like instant restoration, piece by piece restoration, or only a single piece restore. First you must find out what you like most and then go to decide what effect you will perform.
If you like instant card restore, I will recommend you Descent by Justin Miller and/or Torched and Restored by Brent Braun. For both effects you will need a little set-up but I can't call it a gimmicked effect.
If you like piece by piece restoration my top recommendation is Counterfeit by Wayne Houchin ! This thing is just amazing and the method is freakin ingenious. I can also recommend you one more effect that is practical, but the set-up will take a little longer (not much) I don't actually know the effects name, but it is by Alan Rorrison. He teaches it in his penguin lecture.
And last but not least if you like single piece restore my top 2 effects that I perform non-stop are Regeneration by Blake Vogt and Vibration by Justin Miller. Both effects get amazing reactions every time, but regeneration is way more simple and fair. The good thing about vibration is that is impromptu.
I hope I helped with your decision and whatever you choose from these, they are all awesome ! Just find out what fits you best.