Price was certainly a factor when i bought the CD+, along with wanting minimum level 5 PP. At around £10 a hoop at the time, i considered them a great deal. They were also the Reflex ones. Clearance at Chain Reaction i think. Good to know the difference between CD+ and MG, and although mileage is not a big deal to me, if there's not a lot in the price between them, i'll try MG next time.