I think several of the kits work very well, plus there's some that a lot of people don't even know about such as Tory Shellehamer's kits.
Hopefully with all these options the prices will come down some eventually.
I could not run an RMS AlterK kit because my inner fenders are custom re-inforced so my only option is the kits that use the stock upper shock mounts.
So the HDK was my only option other than MF and I will never use MF, and HDK was within driving distance so I saved the shipping money, win win situation for me.