We have a "class" #1. We're rarely carrying full crew (average 4-5). We sail western lake Erie with average water depth at 15 ft (similar to Narragansett Bay; short choppy seas. We don't hesitate to go to the number 2 when crew weight is down and wind is up. Seems you can sail the #1 with a marginally functional main or power up the main with the #2 up.
We don't have the luxury of sailing one design for speed testing. One other J/30 is in our fleet with old sails; next year will be a better test as he is updating his sail inventory. Our competition has typically been a J/92, Evelan 32, a couple of J/29's, two S2-9.1's, 1/2 dozen Hobie 33's, a Melges 30 and two Santana 35's. The # 2 has been our favorate sail ever since it came on the boat last season. We took class overall last year. We won class and and took PHRF overall this year.