Probably the best advice I can give is something any long time boat owner will appreciate and agree with. That is...the less mechanical devices you deal with, the happier the sailor you will be in the long run.
I'm totally biased, as I sought out a Bene that did not have the mast furler. It's 1) mechanical, 2) not safe in heavy weather, and 3) slow
I love my stack pack. The hoist is a breeze, the drop is a snap. After I drop, it's a simple zip of the pack. Lot's easier than dealing with a jam.
Full disclosure. I have thought about how great the in boom furling would be, but again, it's mechanical and bound to break, and I've much better things to spend money on.