As a newcomer to this forum, I have a question.
In addition to my slowly growing 'collection' (I have exactly 5 'non-standard' decks!) I have two decks of Bicycle Standard playing cards with to practice. These were bought on ebay.co.uk (since I live in the UK)
These having become a little 'tired', I bought 4 more decks. I loved the finishes on those 2 decks, and was looking forward to receiving 4 more.
When these extra decks arrived, I was disappointed to find them to be...different.

The top decks are my original 2. Note the packaging. I presume that these have the Bicycle 'air cushioned' finish - they feel nice in the hand and have a linen feel to them. They also seem to be the same stock as my Archangels, Guardians, Dragon Backs, etc...
The bottom row represent the packaging for the 4 subsequent decks. They look to have the "linen" texture, but they feel like blocks of plastic in the hand, almost as if air-cushioned cards have been dipped in plastic. I am sure that they are official Bicycle cards
So onto my question (finally!): What 'stock' or 'finish' do these nasty bricks represent, and how can I avoid them in future?
If someone can help clear this up, I would be very much obliged!