Smith vs. Ruger
It's ironic that Smith's little 38 seems tougher to me than the plastic Ruger. Usually, Ruger's stuff is made tough.
I would go with the Smith. As for a Bodyguard, I'm not huge into those. Yet more plastic and why? For less than a pound difference? Nah. I like the 638 and the M&P 340. You can get a 638 for $375 if you shop around. The M&P is more costly, but lighter and it is made of metal and not plastic.
Ruger's LCR is bulkier, heavier, and made of plastic. Yes, some people like them, but I would go with the tried and true Smith. I have shot both, and I own a Smith Airweight. I would not buy the LCR, personally. Why own plastic if it is heavier than metal? Granted the Smith is aluminum, but it will not rust. Also, I believe Ruger discontinued the boot grip, which did not grab pocket fabric as much. Now, Ruger is selling the rubber grips only, and those are clothing grabbers. Good luck pulling out a Hogue Tamer in a hurry. It will Tame you more than the perpetrator who is threatening your well being. The Crimson Trace grips are nice, but they up the price by about $270 more (you can buy those separately at Gunbroker.com, by the way, for $230, but then you've got shipping to deal with).
I owned a 340PD and enjoyed it. I sold it because I wanted a steel cylinder. The PD is very light and shoots great, as long as the shooter takes special care to clean the cylinder differently from steel.
Whatever you buy, get a trigger job! Smith Airweights are notorious for heavy pulls. My 340 was up to 15 pounds before I got it fixed. That is some ugly pull, let me tell you. I felt like a Wild West Dentist pulling a tooth with pliers every time I tried to pull that trigger.
The Ruger LCR has a better trigger than the Smiths, but it, too, could use some work.
I suppose the Bodyguard is a good deal considering it has a laser. Still, for that price, it can't be a very good laser. If you can afford it, find a used M&P 340 on Gunbroker. One of those can be had for around $500 without the fancy-schmancy laser, which, in my opinion, is all for the intimidation factor anyway. It's in the "bells and whistles" category for me. I own one on my M&P 340 and I rarely practice with it. In close quarters, it's better not to even bring the gun all the way up to your eyes, anyhow. Takes too long. And if you are aiming way down the street at someone, then you are probably going to jail if you hit them. In your house, you are so close, you will not usually benefit from sighting down the barrel at an intruder. Anyhow, this is all academic. I just think lasers are over rated. In a dark house, they will give away your location to the bad guys if you turn it on, and once it's on, it's hard to turn off. If you go to squeeze your trigger, there goes that laser. "Zing! Hello!" You might as well wear a Christmas Tree light on your head that says, "Here I am!"