Airweight, particularly a 642-1, gets the nod for pocket carry for MY use ... but the carbon steel 442 is an excellent little gun, too.
I disliked titanium cyinders on the Airlite Ti guns ... just ME ... and the savings in "weight" wasn't sufficient to justify the increased cost, again, to ME. I also preferred ammunition (lead bullets) not recommended for the Airlite Ti guns.
I prefer aluminum frames, steel (stainless or carbon) cylinders and barrels. Nice balance of strength and weight in the current Airweight guns rated for +P ammunition.
I dislike shooting 125gr .357 Magnum through the Airlite Sc guns, and the extra cost is just more than I care to pay for another .38 snub gun. I'd bet the Sc aluminum frames would withstand a lifetime of shooting .38 ammunition, though ...
My older 649 Bodyguard is just heavier "enough" that I found myself not choosing to consider it for general pocket carry. The exceptions were large insulated vest pockets, and heavy jacket & raincoat pockets. Of course, even my 2.25" SP-101 DAO .357 worked for "pocket carry" in those "exception" circumstances.
I'd rather shoot .357 Magnum through my SP101 than an Airlite Sc 340. I'm sure the Airlite Sc gun will last a lifetime, but the extra mass of the Ruger will allow my hand a better chance to last my lifetime, using .357 Magnum ammunition, too.
These sorts of issues are why folks who prefer J-frames often find themselves owning more than one of them ...
The compact size makes them convenient, and the newer designs have really increased their versatility.
The very things that make them convenient and versatile also tend to make them more difficult to shoot for many folks, though, and they generally require more frequent and dedicated practice in order to shoot accurately and controllably.
There's enough different models available nowadays that there's probably one to suit most anyone needing a snubnosed wheelgun.
Did I mention I prefer the "plain" Airweight? Nice compromise.