Diamondback is supposedly made up of guys that originally split off from kel-tec who wanted to make a better product.
I've heard this and others say that this is not the case. Still not sure if this is true or not.
I purchased a ZC series EXO model a while back ago and have had some occasional trigger reset problems. It's nothing I've been particularly happy about but I haven't sent it to DB yet for them to check out. Will probably send it to them next week after my new toy arrives.
Also, let me throw in a shameless plug. This afternoon we had a batch of wallet holsters arrive at the shop, including one for the DB380. (also included, Ruger LCP, Taurus TCP, and Kel-tec P3AT) If you're interested let me know. :thumbup: