The Personna Platinum Chromes you have shown above are available in 3 forms.
v1 - red card packet, red sleeve - comes in packs of 5 blades Made in Israel, for American market
v2 - white plastic dispenser, white paper sleeve, comes in packs of 10 blades, Made in Israel, for European market.
v3 - white plastic dispenser, white paper sleeve, comes in packs of 10 blades, Made in Germany
v1 and v2 are supposed to be the same blade, but are sold with different packaging.
Connaught Shaving in the UK sell v2 and v3.
The Med Prep is supposed to be similar to the Personna Lab Blue which is a good blade. The Med Prep is a lot more expensive though.
As with any blade it's down to the user.