There is a lot of nonsense being told about LRP's warranty situation. I sent in a Sphere Competition with all motor and battery wires removed and received a 07 Competition in return brand new no questions asked and no supplementary charge!
As long as you have a proof of purchase you don't even need the warranty card.
Brilliant speedos by the way too. Unless you don't like blue, in which case you can buy Nosram, which is pretty much the same thing in red.
If you want really good customer service try GM-Racing. Ralf Helbing is a bit of a geek and spends most days on the GM-Racing forums answering questions about the products he develops. You don't get much closer to the company than that
Buying second hand is no problem either as long as you get the proof of purchase along with the speedo.