I have owned both PST Gen 1 and Gen 2
The Ares BTR smokes both in about all quality’s IMO and more sturdy as I have been pretty hard on the Ares with no issues
And both PST scopes I had to send in for failures shortly after I bought them, so the ETR in my opinion should be far superior.
Thanks for the feedback... I have been happy with my PST Gen II, so will have to give the ETR a close look if it is at least as good or maybe better.