From what I see the 21 has the feet and the dome is the standard depth.
The 22 TT has the hi cap and you get more height for grilling plus you can get your pizza up higher in the dome. You will need to make a stand for the 22 TT.
Sous vide boneless cross rib roast for dinner today. Started it Fri about 6pm at 135F. I'm pretty sure 36 hours would have been just fine but I didn't want it for breakfast. Should have put it on later Fri. night but no harm done.:)
The donair meat was from the freeze as was the pita bread so this was a quick fix.
Pita bread, donair meat, melted cheese, greens, salami, tomatoes, just made donair sauce and sliced red pepper.
Plated.