An after thought...
I rented an iron set once to see how the clubs performed.
In rental they were terrific. As I've found is often the case in rental.
However ... After purchasing ... I never hit another ding.
That was when I was "pullinup" started June 2008
The irons were ping steel shaft but I don't recall what level.
So remembering this I don't put much stock in rental performance, and rarely rent.
That said there are also clubs that have performed to expectations and more.
The original Ping 230 3W and the Rossa L55 putter are prime examples.
The ping G20 steel L59 irons also have enabled me to remain competitive for a long time.
However currently I don't see a iron set with a performance level available to me L95 that I consider to be long term value.