I was leaning towards 19 HT and did a "multivariate decision analysis " on 19, 22 and 23, but most of them are very subjective.
-thermal mass of 22 is higher
-cross section area was similar to 23, but 22 high top had more upper volume
-pricing was similar (even with added lower grill)
- liked the leaner shape look of 22
-and more importantly, the tiles (more terra than blue) gave the 22 (that was in stock ) a the look my son and wife liked !!
DaVarg
davarg.com