some of the jury say EZ is easy, some say Painless is painless, some say the original style reproductions are a no-brainer, just follow the factory diagram .... they all come with instructions, all have individually coded wires, and all are 'acceptable' quality
depends on what you're building and if you want 'original' appearance or are going to add the bunch of extra electrical stuff that EZ and Painless provide for in their "number of circuit" kits
Bill