The Pentax 80mm angled scope does better than most at 300 yards; you are only limited by conditions.
I have not tried any of the fixed power eyepieces; however, I would go with the XWs rather than the XFs. The XFs are oriented toward the 65mm scopes, and are not as bright as the XWs. Most descriptions of the 65mm scope says that the XF eyepieces hold them back compared to other high quality brands; that in itself would lean me toward the XW.
It is an excellent "jack of all trades" scope, and robust to boot. I've been very pleased with it.
NRA Life Member