I had a 357 LCR for my carry - I like Rugers and the LCR was fine for shooting 38s. When I got it, I got the 357 version so I'd have the option of either 38s or 357s. I'm getting to old for the recoil the 357 has - I love 38 spl and am happy to stay with it. That said, I think any of the LCRs are fine and will hold up if taken care of. I traded mine off and got a S & W Model 36 because for my carry purposes, it works better for me - I just like the Smith better.
There are those who think it is a "mortal sin" to shoot 38s out of a 357 . . . sorry, but I'm not one of them. I clean my handguns after every use and if you keep your cylinder chambers clean, it's not a problem.
If I remember correctly the .357 LCR is a couple of ounces heavier than the 38 models - really, it's no big deal. The revolver is light so for CCW, it works fine. Some complain about the trigger pull being to heavy . . . yea, it's on the heavy side but you get used to it and adjust to it - it's designed for a SD DAO and it serves that purpose well. For SD ranges, I found mine to be plenty accurate and had no problem with small groups oin critical mass.