Well there's Purpurea which are low laying which aren't Trumpets and then there are the long tubed ones which are Trumpets. Like Sarracenia oreophelia aren't flava but are still TrumpetsNot quite sure what you refer to as Sarracenia trumpets but I found that ordinary flavas were hardier than more sensitive Sarr's.
May I ask what flava species you have and how cold does your climate get?Depends really on how cold you want to go, the most reliable cold hardy pitchers I have out in the open in the UK are flava, oreophila, plus their hybrids, anything with purpurea in it as a hybrid, and leucophylla and its hybrids. Rubra has always expired on me, when grown outside for longerf than a couple of years, although I do have some hybrids that do OK.
Cheers
Steve.