I like my 3" 547. Cheap ammo (relatively) and it has great handling characteristics. It has a couple of scuffs, definitely not a safe queen. Fun range gun for me. Surprisingly accurate at 15 yards. For "serious purposes" I don't trust the extractor mechanism, and I have other weapons that are more suited to that task.
All said, I'd keep the 547 and work on acquiring the 610 some other way. I love 10mm's too, and a 610 is one of my Grail List guns.
The Highlander