I personally have never used them. But, I just watched the YouTube vid that Rural Route did for them. Based upon what I saw I would assume that Pinegar Limo uses them... so you might give Ty a call if no one else has first hand experience to see what he has to say.
That is our embryologist. Great guy! Comes to our place to just put in one or several. Works even on Sundays, just after church ;D Give him a call, tell him we recommended him.
A lot of people around here use him, Butler Herfords, Bellis Herfords, many more...