I prefer the 358156 over 358429 for the simple reason that loads worked in my old Blackhawk will work in any 38 or 357, without leading, and usually giving decent (4" at 50 yards) accuracy. Maybe not the best load for one individual revolver or another, but solid usin' loads that tend to hit near point of aim in fixed-sight handguns. I've never gotten the same results with a plainbased bullet (even though with a couple of loads in a couple of particular guns, I've had loads with 358429 that were as good or better as the results I got with 358156).
My usual 38 load is basically a ballistic duplicate of the +P FBI load, and goes about 950 fps from my 4 5/8" Blackhawk. I've been using recovered range lead for bullets, but have recently gone to using 30:1 alloy and have been dabbling with pure lead and lead w/2%. Zero leading problems so far (something that can't be said for the factory FBI loads in most guns). I haven't been able to put together a similar general-purpose-in-multiple-guns load using a plain-based bullet. I've got a 38/44 load using the same powder and bullet, but don't keep it around as it is pretty hard on J and K frames. My usual .357 load uses the same bullets, at about 1,300 fps from the same B'hawk.
The gas-checked bullet also seems to require less work-up for a new load when I have to switch powders.