I had my 3" 63 on order since it's announcement in early 2010 - it finally became available before last Thanksgiving, when I snagged mine. I ordered Pro 60 style grips for it and my existing 5" 63. Last month saw the arrival of the 632 Pro, also first advertised along with the 3" 63 - it borrowed the 5" 63's '60 Pro' grips. I added an actual 3" 60 Pro in January of this year. The last eleven months was a sort of J-frame 'fest'.
Without a doubt, the 3" 63 is my favorite of the above three - and will be here long after many other S&W revolvers are gone. It came with a decent trigger - fully equal to the 5" 63, which I had cleaned up it's trigger and resprung, as well. The 3" 63 got even better with use - and no improvement was noted when I tried lighter springs in it, making me think that it came with different springs than the 5" 63, which is growing cobwebs from lack of use.
My 3" 63 came in fine shape, as have the latter two J-frames purchased. The 3" 63 balances quite well - and DA shooting accuracy and effort are second here only to my 4" 617 in rimfires. The 3" 63 has displaced my 4" 617 and it's DS-10 speedloader and 6 x 10 loading plate from their regular range bag perch, an existing 8-shot DS-10 Speedloader and 4 x 8 loading block from the 5" 63 helping in that effort. It likes my usual cheapo plinking ammo - Fed 550pk of 36gr plated HP's from Wally World - as many as 300+ in a day - and everything else I have tried - including CCI Stingers - equally well. It has yet to have it's first ftf. It feels significantly smaller than the 4" 617 - actually, it does feel like an extension of my hand, as tired as that expression seems. That HiViz sight lights up in any light like a searchlight. I already had put similar sights on my 5" 63 and 4" 617 when I bought my 3" 63, so it's inclusion on the new 63 was a big positive here.
From my prior horrid experiences with a new 4" SP101, in .32 H&RM, I will likely not be getting a new .22 LR 4" SP101. To me, the 3" 63 is well worth the $100-$125 difference in cost. In fact, I have fewer revolvers since making the switch from Rugers to S&W - but I have what I like and enjoy. YMMV.
Stainz