Reliability vs Lead-less IC packages

[RogerThat]

Hi everyone,

Some years ago I investigate this and the consensus was that leaded parts (TQFP, SOT-23 etc) was considered more reliable than lead-less(DFN,VQFN etc). The application is/was for harsh enviroment: vibration, hot/cold, moisture etc.

I'm now researching new parts for the next project and I'm seeing lead-less parts being advertised as "high reliability for harsh enviroment", mainly DFN discrete transistors.

Has there been any new research showing that lead-less parts are equal or surpassing leaded parts for reliability?

[RogerThat]

According to a Vishay's DNF soldering guide it is possible to achieve up to 5000 cycles now(link below). Still a bit short of the +10000 cycles for leaded parts.
https://www.vishay.com/docs/86198/sold_rec_for_dfn_packages.pdf