This is a new tool Revell kit, not to be confused with earlier efforts.
It has excellent detail for the scale, with a lovely interior, well detailed engines and undercarriage. THere are various options including bomb bay open/closed, and nose glass.
Also, and perhaps more importantly, it looks right. Fit of the parts is very good, with just a little filler needed on major joints. There are two decal options but many more are available from after-market suppliers if you wish. Colour schemes are either natural metal/olive drab or olive drab/neutral gray.
Instructions are typical Revell but easy to follow.
In terms of the competition, Hasegawa's B-17 is ageing but still looks good, although it lacks internal details and has raised panel lines. It's also more expensive. Academy's kit has good detail but the wing dihedral is far too pronounced and the Airfix model is very old now, with crew who look like spacemen.
This joins Revell's new Lancaster and Halifax kits as the models to have and like those kits, it's great value. I believe Revell will also release a B-17F version soon, the only problem with that is how to make room for all these on your shelf.