Well for me personally I have a preference for the X-Mags yes they will be a bit heavier than a Devilmag but I prefer some added weight due to my preference for older guns mainly mags and cockers. I also prefer the X-Mag because of the fact if I forgot to charge the battery or something goes wrong with the electronics I can still shoot the X in mechanical mode whereas you would have to swap guns or spend unwanted time to fix the Devilmag.
Now as far as the differences the X-mag is a stock AGD design the only real upgrade has been the Xmod flash for newer settings, the Devilmag is mainly just normal mag parts with a custom 90* frame or modded Hyperframes and Spyder frames so all you had to use was a single 9 volt versus the X's huge battery pack. Another difference is the X-mags have the ACE eye system to help prevent chopping versus the Devilmags having to rely on your hopper feeding properly and a properly tuned valve working right with the board and noid.
WHY GIRLS SHOULD DATE A PB PLAYER: 1.WE KNOW HOW TO GET DOWN AND DIRTY. 2.WE ALWAYS WEAR PROTECTION. 3.WE HAVE AT LEAST A 14 INCH BARREL. 4.WE FIRE OFF HUNDREDS OF ROUNDS WITHOUT GETTING TIRED. 5.WE KNOW HOW TO FOLLOW INSTRUCTIONS. 6.WE CAN FIT INTO TIGHT SPOTS. 7.WE LOVE TO BE AGGRESSIVE. 8.WE NEVER FORGET TO LUBE OUR PRODUCTS. 9.MONEY IS NO LIMIT. 10. A CONDOM IS A MUST