ARI Performance of the 5-ton Infinity 16 HP seems to be better than its cousin, the Infinity 19, when paired with the 58MVC ICS furnace. Cooling is 59,000 BTU for the Infinity 16 but only 56,000 BTU for the Infinity 16. The other stats are about the same. ARI Ref #1409827 and #1409578.
The only difference in the two units according to Carrier's literature is that the Infinity 19 uses a scroll compressor.
If cost is equal, is it better to gain the extra 3,000 BTU or have the scroll compressor?