Adding 2nd Doorbell

I've read several previous posts, but to be specific, and having been away from my current Ring2 doorbell for many months (moved and built a new home ) I'm wondering which model would make the most sense for my new and second doorbell for the back door.It appears that Ring2 doorbells have been replaced with Ring3 ($200) and that's a chunk of change for me. But, for the best overall performance for monitoring my front and back doors does spending the $200 for Ring3 make the most sense?What would you suggest?