Check to see how much play there is when the cylinder is locked, and the trigger is pulled. Load your SNAP CAPS and pull the trigger, let the hammer drop and hold the trigger back, in the fired position. Check to see how much play is in the cylinder. Do this with each chamber. There will be a little play, but the cylinder should not move back and forth in the lock notch very much. Ideally, there should be no movement, but that doesnt happen very often, that a revolver has no play, and a little bit is acceptable. Make sure that all the chambers feel the same, not some tight, and some sloppy. Check how much play the cylinder has front to back. Again, a little is acceptable, ideally, there should be none.
Check the barrel/cylinder gap. Look at where the FRONT of the cylinder meets the barrel. There will be a slight gap, and you will see light thru that area. It will be maybe the thickness of 2 or 3 sheets of paper. Rotate the cylinder, and make sure that gap is constant. The cylinder should never touch the barrel.
Make sure the barrel isnt canted. The best way to see this, is look at the revolver pointed at you. Look at where the barrel meets the frame. It should be perfectly straight, not twisted to one side, or the other.
I would have liked it if my 905 was Stainless, but after buying my Model 94 in Stainless, the Matte finish that Taurus uses now, is just ugly. I like the brushed finish that Ruger uses on their Stainless guns. Stainless is more forgiving as far as maintenance goes. Something to consider before you plunk your money down.
Good luck. Post some pics when you get your 905, and a range report. Consider some Moon Clips from TK Customs. They are better quality than the ones you will get with you new 905.