I had a chance to fondle a few options over lunch. All were concealed hammer, which I think is essential for my intended use, the LCR, two differnt Taurus models, an S&W 642, and an S&W Bodygaurd 38. The LCR felt the best in my hand. The 642 was the smallest of the four and concealed the best. Both Taurus guns felt noticably heavier and larger. The Bodyguard just felt a little "hoaky". I have not been able to shoot an LCR, but I have shot a 642 in the past and I don't recall it being anymore abusive to shoot than the PF9 I used to have (and I would regularly fire 100 rounds through that in a range session).
My intended use is weakside front pocket carry as a BUG. Since I have fairly thick legs that don't leave much room in my pockets (even though I always buy pants with the waist 2 inches larger than need be for my IWB set-up), I think the scales are tipping towards the S&W 442/642.