I did my first 10.5 brew on one, a witbier, which I knew would be a good challenge for it. The unit is actually a gift for a friend, bought on sale, but I won't see him for another few months due to COVID, so I figured I'd learn its quirks and get it nice and clean for him.
I did my usual new-stainless-SOP - a hot PBW and TSP soak, heated up to 160 at full volume just to get a sense of the unit. What I did not do that I regret is bring it to a full boil, and give it a good scrub, because my brew day definitely turned up some factory oil/grease that turned the wort purple-gray after the mash and getting it up to 170-180 degrees.
Other notes: The brew day wasn't too terribly long (4.5 hours) for producing 6.5 gallons of wort.
This was a witbier I started with a Ferulic Acid rest, the ramp from 113 --> 152 only registered as 27 minutes, not bad for 110V. However, I quickly realized this was because the mash started getting sticky and the basket-recirc was actually running over, back around the sides of the basket, back toward the element, effectively bypassing the grain in the mash. So I slowed the recirculation way down, set the temp to 160 and used my long thermometer probe into the body of the mash to get a sense of the true temperature. After a ~45 minute total ramp to 152 (measured, actual), I held it here for ~40 minutes. I was able to get the basket up and proceed without issues. Normally I would do a mash out of 168-170 but that didn't seem possible with this grist. Boil went fine, another 27-ish minutes to reach boiling for 7 gallons. I wouldn't call it rolling for most of the time, it seemed to fluctuate quite a bit.
My take aways and recommendations:
1. Hook up to 240V if at all possible, the 120V boil at full power is kinda meh.
2. Don't do anything but a single infusion mash for a cereal-heavy grist (e.g. heat it up to 160 and then mash in)
3. Install a better valve for the wort return, after the pump, if you bought the recirc kit.
4. Unit is great for doing step mashes if you're just using barley.