I have the 20x60x80. One lens under the power ring has come loose. After transport, I have to either run the power setting up and down or shake it a little to get the lens seated right. It's not a problem after that.
The supplied tripod is very cheap
Phillip McGregor (OFC)
"I am neither a fire arms nor a ballistics expert, but I was a combat infantry officer in the Great War, and I absolutely know that the bullet from an infantry rifle has to be able to shoot through things." General Douglas MacArthur