The Apogee Ensemble is an external convertor you can use via ADAT with your 003. This would give you better conversion while still using Pro Tools.
But if latency is really bothering you the only real way to get around it it PTHD or native with PDC. (Excluding PTLE with Mellowmuse)
You're now deaing with the eternal PTHD/PTLE/Native debate.
The Speaker Snuggy is specifically designed to compensate for the additive effect of using plugins which literally remove the blanket from your speakers. These plugins can sound good when solo'd, but when used across dozens of tracks they can leave your speakers sounding cold and insecure. (Casey / Bricasti)
When I haven't any blue I use red. (Pablo Picasso)
Ol' Betsey Satan - The Original Flower
Shop 8 track - "She fought long and
she fought hard..."