I demo'd both of these guns years ago and actually purchased two of the Finex guns. Both are entry level spray guns, but the Finex is a better quality gun in my opinion. It has better atomization and spray characteristics. The spray cups on the Finex are also better quality. I had issues with the cup sealing on the Devilbiss and it was manufactured very thin allowing it to bend easily. I'm pretty sure they no longer make the Finex line though, so getting replacement parts might be an issue if you ever need them. I have never had to replace anything on either of mine until last year though (and it was my own fault... took it apart for a super good clean and lost the teflon needle bearing). My full size Finex is still operational today.