A lot will depend on how the file is set up. The functions of the device will matter (especially if you want to make notes), and you'll want to find a digital bible that has the features that matter most to you.
Sounds like you're looking for:
- Search ability
- Annotations (maybe?)
- Good indexing/table of contents (mostly matter of the file, not the device)
- Quick skipping around
- Bookmarking
If you don't care about making notes/annotations, you might look at the Jetbook or Jetbook Lite's features.
Otherwise, the Sony Touch or Kindle might work for you; they don't have quick page turning for flipping through lots of pages at once, but a good index will get around that need, and they do let you skip ahead/back many pages at once; it's just single-page flipthroughs that are slow.
I believe the Kindle doesn't have page counts; it has percentages.