The 3 most important items for precision shooting are:
1. Fit
2. Fit
3. FIT
O/U, SxS, semi-auto or pump are PERSONAL PREFERENCE.
12 or 20 ga is personal preference
$$, $$$, $$$$, $$$$$$ is personal choice.
A gun that does not fit, you will not shoot well and not be fun.
Whether you choose...