I did not have the same experience with the Trailcal. Half the features didn't work, it would crash fairly often, and Superchips tech support was terrible. They started removing the features from their website and claimed that the Trailcal never supported them. They weren't able to address a single issue.I also have the used both and currently run the flash cal. I agree the flash cal is more elegant, less cumbersome and feels like more hardware value per dollar spent. However, the ESS function on the tazer is a game changer.
I really wish Superchips would incorporate that feature.
Maybe the Flashcal works better, but Superchips tech support is terrible. Also, you don't get the live features with the Flashcal. I know I like to be able to disengage my sway bar and engage my lockers in 2H/4H. There are other live features, but I use these two the most.