I love Bethany! I feel the same way about it. It's definitely an upbeat, bright, friendly name. The only negative I could think is that it may seem dated. The only Bethanys I know were born in the early-mid 80s, and I know at least 5 of them. All nice Bethanys. :) I don't understand the tacky reception of it at all. I'd use it in real life, but my husband had vetoed it a long time ago.
I also really love Bethan, if that is another option for you to consider.