I'm very against using the DXSpriteEngine, since it has a lot of bugs and it clouds what it actually does. The bugs I'm referring too once destroyed a space invaders game I was creating (the sprites moved out of the screen after moving left and right for a while and it wasn't my mistake) and I found out it was a bug only a year later.

The TBackGround property is pretty cool though, however I never measured if it's faster so I can't deny nor admit it... Where would it get it's speed increase from you think Useless Hacker?

So to sum it up: use the DXSpriteEngine, but use it on your own risk!

P.S. I believe DelphiX comes with examples of about every component. The DXSpriteEngine and the TBackGround is used in the Basic Sprite example (which can be found in the samples\sprite\basic directory), just look trough the code for the word "BackGround" and the first word you'll find will be it!