Depends on the use case tbh. I have both and am really impressed the Droptine for the value, its a good rimfire scope with higher magnification than the similar price tier Vortex which has better glass. My Droptine was on my 10/22 for years until I bought a RAR where it now rides, since its better precision. Ive got the Diamondback on my 10/22 and the Crossfire on my Henry Frontier. Its hard say which is better, really depends on what you want to do w it but the Diamondback does cost more and is fantastic.