I own 2 DB9's. Both are excellent shooters with manageable recoil, although as per the instructions, I don't shoot +P. I carry a Remington hollow point in which I feel perfectly comfortable.
The only problems I have ever had with mine are jams on the first magazine-full of a new shooting session, because I forget how lightweight they are and don't hold them tightly. They are very prone to limp-wristing, so you have to consciously hold them tight. If I do that with both of mine, they are almost 100% reliable.
I highly recommend them. However, honestly, I have carried DB380's more often than the DB9's. They are just enough smaller that the DB380's are comfortable in front-pocket carry, where the DB9's are marginal for that. I have 3 DB380's and they are very reliable as well--with the caveat that my old two-pin DB380 does NOT like hollow point ammo at all. But it's a great shooter with FMJ ammo. The other two later-production DB380's with 3 pins are fine with JHP's.
I have always felt that .380ACP was a bit anemic for self defense, but since I found the Lehigh Defense Extreme Penetrators, which use a solid copper bullet, I feel perfectly comfortable carrying the DB380's again.