never heard of a budget lift including full blown rear springs lol. if your on a budget why not pick up a 20 dollar set of 2 or 3 inch blocks, or an 80 dollar set of shackles or AALs. rear springs are gonna run you around 300 or more
I'm using the Skyjacker leaf springs. They give me a solid 2.5". They are a fairly stiff 3 leaf pack, but they offer more payload capacity than stock and are about 1000x better ride than the Downey AAL they replaced. They won't ride as supple as some of the other packs with more leaves, but they are an improvement over an AAL. For about the same price, if you want a little softer ride, you might consider the OME spring pack.
allpro leafs. i have 5 inch allpro leafs in the back with 2 inch toytec shackles and it rides pretty good. incase you were wondering i have 6 inch trailmaster and extended king coilovers in the front. and a 3 inch body lift to top it all off.