Which lift do you recommend?

[77K20]

I am planning to lift my truck in the near future. I originally wanted to go 8in total. 6in suspension and 2in body. But I don't have the money for rotating axles, and longer drivelines, and everything else that is involved with a lift over 4in. So I am thinking I will go 4in suspension and 2in body for a total of 6in. I want to know what lift you guys would reccomend I get, and also which ones I should stay away from. Also what is the difficulty of installing a 4in and 2in lift myself? What areas are problematic and I should be extra careful around? I want to go with rear springs instead of blocks, is there any advantage or disadvantage to this? I know it is a bit more expensive, but I like the look better and that is what I want.

Thanks in advance for any and all info.

2-Knee