Depending on what let-off you need, the 4.8 is for 80% and 5.4 is for 65% let-off. My 04 Patriot is set for 65% letoff and measures exactly 30" draw length. I do notice that the 30" draw bows do not have as much valley as the shorter draws. Just something that you get used to, just can't creap at all or the cam starts to roll hard. When I visited the Bowtech factory, they said that some bows need the draw stop adjusted up to the sixth mark to make the letoff and draw correct. It might take a little experimenting to get it perfect, moving the draw stop a little makes a big difference in your draw length. Hope this helps some.