Thanks to everyone who has replied.
The bow is the original X-force with the6" brace and I have a draw length of 29" and (obviously) the position of the rest allows me the 27"arrow.I'm not concerned at all about adding the extra weight of a stiffer spine arrow, I actually prefer it the extra weight, I'd sacrifice a little speed for aslightly quieter shot anyday(not that shotnoise is a problem at the moment). Also the old CX350 spine arrows Iam nearly out of are 10.2gpi,which is heavier than the A/C/C shafts I'm considering.

GMMAT- What was the maximum distance you would have considered taking a shot at an animal with that set-up? And what was your broadhead weight?

I really wasn't expecting these mixed replies, but please keep them coming as i really will have no way to test this before purchase.

Thanks.