Having owned both body protectors, there is no difference in the safety aspect, they bot have passed the same test to be graded level 3 protection. I prefer the newer one as i find it moulds better to your body shape (and i think it looks better) however both are good body protectors and have saved me from some nasty injuries in the past. xx
Don't have a clue about the new one but my racesafe is excellent, I find it non restrictive and comfortable to use (unlike some protectors which are incredibly stiff) I use mine in conjunction with a Charles Owen Shoulder Protection Tee (i don't like shoulder pads built into the protectors, find it too restrictive) and it works a treat