Tomorrow is my 50th birthday so I decided to treat myself to a Paps v4 in 18650 with silver plated contacts! I've had a Paps v3 since it first came out, plus a Heron v2. I love them both, but the v3 is an 18500 & I wanted an 18650 for a little more battery life. Can't wait till next week which is hopefully when I'll get it.