Hi, Ken --
I liked my test sample Ruger LCR well enough to buy it. The backup snub I usually carry on my own time is the S&W 340 M&P, maybe an ounce heavier than the LCR, because I love its sights (Big Dot tritium front, humongous U-notch rear). However, I've carried the LCR and am very confident with it. It's a good value, and with the Hogue grips co-designed with Hogue and Ruger LCR project leader Andy Zajk (hope I spelled that right!) it feels to me as if it kicks less than a J-frame of the same weight with the same ammo. I find J-frame speedloaders don't work as well in the LCR as in the J-Smith, but my backup ammo is usually in a Speed Strip, so for my needs it's a non-issue.
Hard to go wrong with either one, really. The Ruger generally has a lighter trigger pull, and I've found that women in particular are highly likely to prefer it to the S&W in side-by-side dry fire testing.