Depends on how much you want to spend. Icon makes all-inclusive kits that actually have almost all the parts, they use progressive rate springs and come with all the suspension tidbits that really make the trucks ride well. Then you have ProComp, BDS, ZONE, solid names with solid parts, just IMO not the best mix of price and quality so these are good for mix-and-match lifts. Some companies like Rancho, Rough Country and FabTech have a fan base, I've never felt the need to deal with them since I've always been able to get a good price on better parts. Rancho, King, Bilstein for shocks, I'd pass on any lift manufacturers shocks, even the Icon if you can parse them out of your order.
Then there's always the never ending string of crackerjack box toys, named after the one shop that installs them or they're a sticker over a sticker of some other random name; pay trash prices get trash parts.