Shock replacement

I'm looking to get new shock for my 06 nismo 4x2. The ones on there are a little bouncy and I feel they'll be on their way out in due time. What seems to be the best shock for regular driving and offroad use (driving trails and mild climbing)?

I'm new to trucks and going UP is a baffling thought to me as I'm used to going DOWN with my 240sx's. I enjoy my stock ride height but I wouldnt mind going up a little. I presume I'd need more than just new shocks for this though?