If you are into a fun center fired plinker with lots of upside you have to be talking about a Ruger GP-100 in 39spl/.357mag. The 4.2" was my choice. It is a great gun. Easy to tune up with lighter springs if you want to play IDPA with standard factory level loads, (read quite mild) lead WC ammo , to 200 gr boomers and everything in between. If you are into reloading and later get into casting lead bullets you can choose every type of bullet known to man. I think I have at least six different molds for the .38/.357 and that hardly puts a dent into the options. Brass lasts a very long time and is found everywhere.
The GP-100 has been out since the 80's. Maintenance is easy. The gun can be disassembled for thorough cleaning due to it's design. The gun now comes in .22LR -10shot. 39spl/.357mag - six shot, 10MM- six shot and 44 spl -five shot.
I agree the big boomers are just that...big. unless you really have a need the guns are expensive to buy, expensive to shoot and unpleasant to shoot. I know of only two fellows who I know shoot or shot them often. One was a Grizzly Bear guide who packed a 500 Smith and another a bush pilot who shot and carried a 460 Smith. I did try the 500. I fired one round of the six I was offered. The gun defines recoil!
You will shoot the .38/357mag more than any other aside from perhaps the Model 25 Smith in ,45acp. The only other option would be a SA Ruger in 38spl/,357mag;9MM or the 45acp/45Long Colt, I have the latter and is fun to shoot in either 45acp or 45Colt. You can even match bullets, adjust the loads so the POA is the same in both calibers.
Take Care
Bob