I know someone who had luck with painless - I am not sure about the others (could be better or worse) I do know that painless is at Cool Cruisers for $350ish but does not include plugs. You have to remove wires from the old plugs and put new wires in (time comsuminig)
I used the painless wiring 18 circut fuse block. Did all the wiring myself with my sbc .Very nice product. Purchase price of $150. My only complaint is that they do not make a cover for the unit. I am going to have to fab one up.