Curious what you folks use/recommend for a good quality hunting O/U in 20?

What barrel length is preferred, for rabbits, possible dove, etc? Guessing 28 but any downside to 26?

3" Recommended? What choke tubes. Seen some 'Value priced' off brands which come in less than the Beretta's and Browning's, etc.

Thoughts? Thanks in advance for your feedback.