Paladin - Protection - Holy or Retribution?

[Bellator]

I know this really depends on playstyle and interest, but going to ask anyway. Do you play a Paladin and which spec do you play and why? I am still playing my new druid and having a ball. I am thinking of even trying a Paladin since I never have. Since I have played casters, is a Protection or Holy a beefed up caster? Retribution seems very much about tanking with some nice spell backup?

Thanks for your input

Bellator