Alright, so some people prefer real women (stretch marks, wrinkles, etc), and some prefer plastic. Obviously renting something titled GILF, you're more in the former camp.
However, the issue is not the performers (except for Xxxena and Gia), but the horrible quality of the product.
Robin, Rose, and Rubee are excellent and hot older pornstars; their scenes (with the exception being Robin) are subpar: Rubee's scene is shot by the performer (generic ugly hairy male) and the framing is inept, and my major complaint is that the camera has auto-focus on, so the most of the action is blurred since the lens is consisting shifting focus. Rose looks great, has gusto, but the framing is consistently on the male performer's skinny tattooed butt.
Ultimately, it is a disappointing rental. I would only recommend Robin Pacino's scene for the diehard fans.