I contemplated the same thing, for the past 6 months I was researching what is the best leveling kit for the PRICE. I thought about Carli, I'm sure their product is good, but is just way too much. I called Carli, and they seemed really arrogant, like their sh*t don't stink, who ever I talked to even bashed all the competition and that just put a bad taste in my mouth. When I tried to ask specific questions the sales guy got mad and raised his voice over mine to try and get his point across. So I decided not to go with Carli.
So that just left me with 3 options, Readylift, HBS, or Daystar. I was going to go with HBS but at the last minute I installed Daystar with 5100 Bilstein shocks and a BD track bar. I'm very pleased, the truck rides better than stock, really smooth and handles good.
I just want to say that HBS has really good honest people working for them. The lady I spoke with was super nice and their company is very humble, she didn't talk crap or bash any other product.
Hope my experience helps you out. I'm sure there will be someone who will say that Carli is the ONLY way to go. Or that coil springs are the only way to go. Its funny in this world of being politically correct I have to say No Offense to any Carli owners, its just not for me. Its just way over priced.