Lets see, i don't know anything about Parkers cept i heard they were suppose to be good. They're suppose to be very accurate according to those who own them. I can tell you about Excals and any arrow size alum. 2213-2216-2219 will all hit a 1" dot with right scope out to 40 yds. I shot my Miss Vixen the other day from the bench and hit 6 out 6, 3/4" dots at 30 yds. using a 4x scope. I have a Miss Phoenix that will also do that same thing!