Incidentally, I forgot to mention this as part of my post. I can only comment on the difference between the Accentra insert's ash pan and the ash pan in the P68. The difference is astonishing. I just had to run my P68 for 10 straight days, as it's been ridiculously cold (not today...almost 60 degrees), and the ash pan still wasn't full. Running the Accentra insert we had for 10 straight days simply wasn't an option. I can tell you that in addition to the obvious difference in heat output, the difference in the size of the ash pan and the hopper were huge considerations for me. As much as I loved the look of the Accentra, it was a frustrating stove from the perspective that unless you went to bed at midnight and woke up really early, there was a good chance you were going to be out of pellets. The hopper didn't even hold one full bag, as opposed to the P68 that holds almost two full bags. Also, having to shut the stove down every 3 or 4 days to empty the tiny ash pan was tough during those really cold spells. Good luck with whatever choice that you ultimately make.
So great you said this about the ash pan. I know it's the XXV vs 61a but I was showing my husband yesterday at the store. He kept saying he didn't see much of a difference (it's not huge, but it's there). Then, we came home and he looked at our busted up old kozi XL ash pan and was grumbling about how even if we do get the kozi working again it's a piece of junk. I think he's officially a harman lover now He was even talking about the ash pan at a family get together. he's a very good student...haha
We are both drooling over the hopper size on both stoves, as well. Either one are bigger than what we have now....very excited about that!
Thanks for the input - things like hopper fill frequency is something I didn't really think about. We were focused on heater size and looks - mainly b/c until yesterday, husband was a insisting "it much have legs" . He's starting to see the importance of all the other qualities too...decision by tomorrow when the stove guy comes to check out the location.