Somebody please help me decide!

[dooce]

So I have decided to lower my truck 4/6. After doing a lot of researching and searching for the right parts, I decided that I will be using 2.5" drop spindles, 1.5" drop springs for the front and 4" drop leaves with a 2" shackle/hanger out back, all from western chassis. I decided this knowing I could only seem to find drop leaves from two places, western chassis and performanceonline.com. Today I was on brotherstrucks.com was looking thru their suspension section and found two different types of drop leaves for my truck. one is the regular multi-leaf pack drop leaf and the other is a mono-leaf type. My first question is which multi-leaf pack do you think would be better? And then, what would be the pros and cons of the mono-leaf set up. It claims to meet or exceed multi-leaf specs. I assume they are talking about spring rate? It also has "fixed end" bushings. Please lmk what you think, thanks DOOCE