I have a PE Super 27 and use the ash dump feature every day in 24/7 burning. I have to empty the built in ash drawer once a week. Most of the time I burn splits north-south in my stove so it's nice for ash removal because most of the coals are at the back of the firebox. I do move any live coals that are hanging around the front to the back, then I open the ash dump door and scrap the loose ash at the front of the stove lip into the drawer, being careful not to scrap live coals in there. Then I rake the coals to the front of the stove, and sometimes let them burn down a bit if needed before re-loading. I do this every morning and the stove runs way better. If I leave the ash it builds up too much and logs get smothered and the air flow to the back is not as good. I keep a 1" layer of ash in the bottom at all times but removing the excess each day really helps.
Personally I don't understand why more people don't like the PE ash dump feature? IMO it's just so much easier than using a shovel and metal bucket. I've tried it both ways and the ash dump feature takes about 5 seconds. The other other way is not nearly as simple...you go get your bucket outside, get your shovel ready, empty the stove carefully without ash going everywhere, take the bucket back outside etc. I pull a lever and scrap some ash to the hole and then it sits in the drawer inside the stove until I empty it. Maybe I'm missing something or maybe other stoves don't have a great ash dump feature? Of course everyone has their own personal preference...for me it's the ash dump all the way
We actually have a driveway with a steep incline so I most of the ash on the driveway instead of sand all winter.