Lognormal Reserve (99.5%) vs TVaR (99.5%) Reserve

Hi,

I use a specific stochastic model for calculating IBNR figures. There are two options related to the results:

1. Mean + Std. Dev. (%99,5 Log-normal)


2. TVaR (%99,5) of simulation result.

With considering your experiences, what do you think about it? Which method do you suggest? Especially for branches with long tail, if it is important.


Lognormal Reserve (99.5%) vs TVaR (99.5%) Reserve