I have no regrets about the peppers I froze whole this year! They're easy to slice frozen and quality and keeping so far is great.
The peppers I stuffed and froze also kept well - it's true they weren't tested for very long, okay I have just two left.

Fifteen minutes in the oven.... yum!
I also sliced some peppers before freezing, and that was more of a mistake. They are giving up a lot of moisture and there's ice in the bag. I'll have to use em up quickly, so next time, I'll simply freeze the peppers whole.