I don't know much about the 56TH but I'm digging the 52 I got. 52 is a 48 with a Monte Carlo stock so the LOP is a little longer than a 48, so depending on your size and shooting position one might fit better than the other. Obviously not recoilless but boy it shoots well. As someone said, they're HEAVY! If I shoot it then shoot my HW95 the Weihrauch feels like a lightweight. If you're just looking for something different it's a completely different experience than shooting a HW30S, or 50S, or 95. Have seen some grumblings on the interwebs RE quality of the post-sale Dianas. Always take that with a grain of salt, but there's a lot of smoke. Might look for one 2014 or earlier whatever you decide on.