I had an early production, black finished 457. Very nice pistol.
The plus side: Light weight, accurate, easy to carry and fairly easy for a big guy to conceal. Reliable too. Eats everything.
The down side: Cheap finish that wears easily. Cheap plastic sights. Made to be carried alot....my frame wore pretty significantly from me shooting it alot (+500 rounds a month). Very little resale value.....and very little interest on the used market.
I'd advise you that if you can get one for $425 or less, do so. I'll probably pick up a stainless model 457 at some point and have Novaks put some decent sights on it. Good luck! Regards 18DAI.