Met up with another forum member lately to do some work on his trailer and really liked his rubber chocks. Durable, but not overly heavy. The plastic ones we have are getting brittle and actually have an expiration date on them. Found these at etrailer: https://www.etrailer.com/Wheel-Chock...w/MT70072.html
When we picked up our 19 in Chilliwack, I got the starter kit. Escape included these: https://www.amazon.com/Locking-Campe...7074872&sr=8-9
They are awesome as the chocks are always nice and clean. They are light, easy to adjust once and can't get hung up. Highly recommended.