I love my Ensemble and have found that with Logic it's not always neccessary to have a mixing console.
I used a Mackie Control for a while with Logic Pro 7, but haven't with Logic Pro 8. I'm not sure if it's compatible yet, but I would guess that it should work pretty well.
If you're really looking to get into Logic a bit, then you'll find that the Ensemble will work better with Logic than ProTools (in a ProTools setup, it would be used in standalone mode as a converter).
The Digi 002 is a decent piece of gear, but LE doesn't even compare to Logic Pro, especially with a nice interface like the Ensemble. If mixing is what you're going to be doing, then a control surface of some kind is almost 100% neccessary...it just takes to long with a mouse and keyboard.