Thanks for the info. So to sum up, it sounds like you would put the following in this order based on storm-worthiness:
1) Sublite Sil
2) Contrail
3) Sublite
And for summer heat, you would put in the following order:
1) Sublite
2) Contrail
3) Sublite Sil
Looks like the Sublite and Sublite Sil handle the extremes of storm and heat resistance (respectively) slightly better, and the Contrail would fit in the middle as the all-around performer — not the very best in either but good for both.
I have some pretty long trekking poles (they go to 145 cm and can extend another 5-8 cm); I wonder if I could place them at a steep enough angle to touch the side walls, thereby adding a structure similar to the Sublite). Seems This might help keep the fabric from blowing inward, but perhaps only a little.