Is this week's big spike in natural gas a sign of a price floor? Is it time to buy? Fund manager Dan Rice likes Range Resources (RRC), whose exposure to rich Appalachian fields that produce gas at low cost should help it survive any further period of depressed prices. Weeden's 45-year vet Charles Maxwell favors Encana (ECA). Morgan Stanley likes: OKE, SUN, TRGP, WMB, SE, XTXI.