I have had this charger for a while now so I feel I can write a meaningful review.
After researching online I found that some MacBookPro users were having problems with the new L style connectors. Since my MacBookPro came with the old T style connector, to be on the safe side I decided to go with this product.
1) It appears to be an official apple product
2) Delivery was on time
3) Been working for almost a year now
My friend recently replaced his T style charger with a L style so I don't think it matters so long as you get the correct wattage for your MacBook. I prefer the T style because it comes out easier if you trip on the power lead and is less likely to pull your laptop over than the L style.
I am disappointed that the T style connector IS NO LONGER OFFERED. This product has appeared to change to the L style now.
The important thing for me is that I get an official apple charger so I don't fry my expensive laptop with a cheap charger, that's just false economy.