I used to have a 3-9x40 with the BDC reticle on my .243. I enjoyed shooting it, took my first doe ever with it. The next season I found a good deal on a used Vortex Viper PST FFP so I jumped on it.
I since sold the Diamond back I used mainly because I like the Mil/Mil FFP scopes now. I don't think there is anything wrong with the Vortex Diamondback line of scopes and I have shot most if not all the lines they offer.
As far as eye relief, I never had an issue with it. I never hesitate to buy Vortex because their warranty is outstanding. I have used it twice and they truly set the standard for the market.
Edited by Gone to Texas (10/21/16 08:58 AM)
Texas Tree Farm
Wholesale Live Oak Trees