Have been having a look at a few jackets, and noticed the varying types of armour in the elbows/shoulders. Some have "CE" armour, others "TDF". What's the difference between the two, and which is most suitable for a learner? I'm leaning towards the harder plastic type armour rather than the foamy stuff, just feel like it'll give me a bit more protection when I stack... Also, has anyone had any experience with Biker Gear jackets? Feel free to tell me to search or move thread!