Why get rid of the Bersa?
If you do not like .357s in the 605 (which I'll assume is a 2" and not the 3") then that leaves you w/ .38s or medium velocity .357s (which are not really any better from a two inch barrel). I no longer see the point of a short barrel magnum.
Having owned or own a 2" .38 (Taurus 85UL and steel) and a 3" .357 (Ruger SP101), I prefer the 7+1 or the 9+1 from my Bersa for HD and carry. I shoot it better and have more rounds. I know, I know, there is something about a wheel gun that I love, but in guns that size, I'm better with my Bersa. Keep the Bersa and save up for the Taurus 85 Ultralite. They are not a whole lot of money. I've owned 5 Tauri w/o a problem, but give it a close inspection AS YOU SHOULD WITH ANY GUN before you by it. If you just want a wheel gun for the sake of a wheel gun, get a 4" or better .357. Just my opinion.
Stink.