Cliche internet non answer to your question:

For Wasteland 2, I personally really enjoyed it- however I do think it drags on way too long once you get to the second half.

Wasteland 3 is a much more polished and tighter experience. It focuses more on faction interactions, with a large number of factions you can support or oppose and various combinations lead to various outcomes. The combat is also much better. Assault rifles were sacrificed a bit, now being generally underpowered choice but it mean more variety in all other weapon classes.